Caterpillarengine - generator setuninterruptible pwr su

Caterpillar UPS1000S

Maintenance schedule, common problems & OEM parts breakdown

The Cat UPS1000S is a stationary, battery-free flywheel-based uninterruptible power supply module sized in the 1000 kVA tier, built to protect facility and data-center loads through a utility disturbance until standby power takes over. It carries no internal combustion engine — energy storage and conversion runs through a spinning flywheel paired with an IGBT bi-directional converter housed in a switchgear-style cabinet built on the ES12F frame. It sits in the single-module family alongside the smaller UPS 300 and UPS 750 units and shares a combined parts and service manual with its larger UPS1200S sibling. Caterpillar brought this flywheel UPS line to market starting in 2000 in North America and 2001 in Europe through an alliance with the flywheel technology's original developer, and single-module ratings such as the 1000S stayed in the catalog for years afterward. Operating weight for this exact rating isn't published; the family scales from roughly a few thousand kilograms for the smaller 300 kVA cabinet up past that for the 750 kVA unit and into larger multi-cabinet 1200 kVA systems, so treat weight as configuration-dependent rather than a fixed number. Configurations include the base single-module cabinet plus an optional remote status panel, a generator-set start-interface module, and, on later production, a contactless magnetic-bearing flywheel in place of the original mechanical-bearing design.

Across this flywheel UPS family the main generational change is the move from mechanical ball-bearing flywheel assemblies to contactless magnetic-bearing designs, which removes the recurring bearing-wear maintenance item almost entirely and stretches service intervals. Caterpillar also grew the lineup sideways rather than issuing a direct replacement for the 1000S: single-module ratings such as the 300, 750, 1000S, and 1200S each cover one power tier per cabinet, while the later Z-series (300Z through 1200Z) parallels smaller building-block modules for scalable, redundant capacity — a different topology, not a straight successor. In the used and parts market these flywheel UPS modules mostly surface from decommissioned data-center and critical-facility power trains. Buyers should weigh remaining life against the commonly cited 15 to 20 year service window for this class of equipment and check maintenance history on the vacuum pump and bearing set before committing, since a clean-looking cabinet can still be close to end of life on those specific wear items.

Below: full specifications, fluids & capacities, the factory service schedule, common service parts, verified fault codes, what owners discuss, attachment guidance, the complete assembly directory, and a serial-number reference. Complete parts lists with full OEM part numbers, exploded diagrams, quantities, and fitment data are available free in Heavy Parts AI.

Caterpillar UPS1000S specifications

Engine

Power Unit TypeFlywheel-based uninterruptible power supply (UPS). There is no internal combustion engine — energy storage and conversion is handled by a spinning flywheel paired with an IGBT-based bi-directional converter.
Model FamilySingle-module flywheel UPS, grouped in factory parts documentation together with the UPS 1200S. Sibling to the UPS 300 and UPS 750 single-module systems and to the UPS 300Z/600Z/900Z/1200Z multi-module Series.
Rated Capacity1000 kVA nameplate rating, consistent with this UPS family's naming convention where the model number states the kVA rating (the 300, 750, and 1200 single-module units each carry their kVA figure as the model name). Exact kW rating is not published for this rating in available literature — sibling units in the family show both 0.8 and 0.9 power-factor ratings (300 kVA/240 kW, 750 kVA/675 kW, 1200 kVA/960 kW), so the 1000S figure cannot be assumed from either pattern. Verify with your Cat dealer.
Emissions TierNot applicable — no internal combustion engine, so no emissions certification tier applies.

Weights

Operating / Shipping WeightNot documented for the 1000S rating specifically in available spec literature. Weight scales with capacity across this family (the 750 kVA single-module unit is about 4,242 kg / 9,350 lb; larger multi-cabinet 1200 kVA systems run several thousand kilograms heavier across separate inverter, static-switch, and flywheel cabinets). Do not assume the 1000S matches either sibling — confirm the exact figure with your dealer.
Ground PressureNot applicable — stationary cabinet system, not a tracked or wheeled machine.

Dimensions

ConfigurationStationary switchgear-style enclosure system (flywheel power unit plus system input/output cabinet), not a mobile machine. Transport length/width/height and wheelbase figures used for mobile equipment don't apply in the usual sense.
Cabinet FootprintNot published for the 1000S rating specifically. Sibling single-module cabinets in this family range roughly from about 1.5 m wide (300 kVA unit) up to over 3 m wide (750 kVA unit) with depths near 0.9 to 1.0 m and heights near 2.0 to 2.3 m — figures vary by rating and are not confirmed for the 1000S; verify with your dealer.

Performance

Travel SpeedNot applicable — stationary equipment with no travel or drive system.
Flywheel Ride-Through / Backup PerformanceNot confirmed for the 1000S specifically. Sibling single-module units in this family provide flywheel ride-through in the range of roughly 14 to 59 seconds depending on load level (100% down to 25% load), with recharge to full readiness in a few minutes. Exact ride-through and recharge figures for the 1000 kVA rating are not published in available sources — verify with your dealer.
System EfficiencyNot confirmed for the 1000S specifically. Sibling single-module and multi-module units in this UPS family are rated 97% to 98% total system efficiency; the 1000S figure is expected to fall in this range but is not independently documented.

Service capacities (summary)

Fuel TankNot applicable — no internal combustion engine, no fuel system.
Hydraulic SystemNot applicable — no hydraulic system on this equipment.
Engine OilNot applicable — no engine.
Cooling SystemAir-cooled by redundant cooling fans, per this UPS family's standard equipment list. No liquid coolant system or coolant capacity is published.

Values vary by configuration, region, and serial range — confirm against your machine before planning transport or lifts.

Caterpillar UPS1000S maintenance schedule

Service intervalTasks
Every 50 h
  • Read the touchscreen operator interface for any active or logged alarm and clear the underlying cause before resetting it.
  • Visually check the cabinet for unusual noise, vibration, heat, or odor coming from the flywheel module.
  • Check the flywheel enclosure vacuum gauge and confirm the reading sits within its normal band.
  • Confirm cooling fans are running and that intake and exhaust vents are clear of dust and debris.
  • Verify the unit is running in normal online mode and has not silently latched onto static bypass.
Every 250 h
  • Log flywheel speed, DC bus voltage, and output load current and compare against prior readings to catch slow drift early.
  • Inspect accessible power and control wiring connections and retorque any that have loosened.
  • Confirm the remote monitoring link (Ethernet, modem, or remote status panel) is communicating correctly.
  • Clean or replace cabinet air filters and screens if the site is dusty.
Every 500 h
  • Exercise a manual transfer to static bypass and back to confirm the transfer logic and static switch operate cleanly.
  • Test the battery-backed control power circuit, if fitted, and confirm it holds charge.
  • Inspect flywheel enclosure seals and cabinet mounting hardware for looseness.
  • Simulate a fault to confirm alarm and shutdown setpoints trip at the correct threshold.
Every 1,000 h
  • Have a factory-certified technician check flywheel bearing condition on mechanical-bearing frames (not applicable to magnetic-bearing frames).
  • Perform a thermal-imaging scan of power connections and bus bars under load to catch developing hot spots.
  • Record vacuum pump run time and cycle count against the established baseline.
  • Inspect DC bus capacitors for swelling, leakage, or a measurable drop in capacitance.
Every 2,000 h
  • Schedule a full protective-relay and alarm calibration check with the factory service team.
  • Inspect the cooling fan assemblies and replace any fan showing bearing wear or reduced airflow.
  • Confirm cabinet grounding and bonding points are tight and free of corrosion.
  • Review the accumulated ride-through event log for any recurring anomaly that needs deeper investigation.
Every 43,800 h
  • Have the dealer inspect flywheel shaft bearings on mechanical-bearing frames; this class of unit commonly needs bearing work in the 5 to 8 year range.
  • Verify the flywheel enclosure still holds vacuum correctly at full operating speed.
  • Reassess DC bus capacitor bank condition against age, not just test readings, since capacitors degrade gradually before failing outright.
Every 70,080 h
  • Replace the vacuum pump per its commonly cited 8 to 10 year service life rather than waiting for a failure.
  • Have the dealer perform a full flywheel spin and recommission check, especially if the unit sat idle for an extended period.
  • Overhaul or replace aging DC bus capacitor banks before they reach end of life.
  • Reassess overall unit condition against the 15 to 20 year expected service window for this class of flywheel UPS before committing to further life extension.

Servicing the UPS1000S beyond the schedule

Predictive Maintenance & Fluid Analysis

The UPS1000S carries no engine oil or coolant to sample - its flywheel spins inside a sealed, evacuated housing, so condition monitoring centers on the vacuum gauge trend instead of fluid analysis. Track vacuum level against baseline at every inspection; a slow decline points to a developing seal or pump problem. Pair that with periodic thermal imaging of bus bar and power-connection joints, DC bus capacitor capacitance checks, and a review of the touchscreen alarm history to catch flywheel-speed or inverter drift before it becomes a fault.

Corrective & Common Repairs

Most field faults on the UPS1000S trace back to the power-electronics cabinet, not the flywheel itself. Rectifier and inverter power modules along with the control/logic board are the parts most often flagged, typically from overcurrent or overtemperature events, blocked cooling, or DC bus capacitors gradually losing capacitance before they fail outright. A fault pointing at the inverter or rectifier stage should be diagnosed at the electronics cabinet first. Static-switch transfer glitches and remote-monitoring link dropouts are the next most common corrective items, usually a loose connection or a failed cable.

Overhaul & Rebuild Points

Overhaul work on the UPS1000S centers on two wear items: the vacuum pump that maintains the flywheel chamber's low pressure, commonly serviced on an 8 to 10 year cycle, and the bearing set on mechanical-bearing frames, typically addressed every 5 to 8 years. Neither is field work - the flywheel spins at high speed inside a sealed enclosure, and opening it outside a factory procedure is both a warranty issue and a safety issue given the stored rotational energy. Route any suspected flywheel or bearing fault to a Cat dealer for teardown.

Seasonal & Environment Servicing

With no fuel system or engine block to worry about, seasonal servicing on the UPS1000S is really about the cabinet environment. Keep intake vents and cooling fans clear of dust, especially in industrial or outdoor-adjacent installations, since blocked airflow drives the overtemperature faults that damage power electronics. Watch for ambient temperature swings and condensation risk in unconditioned mechanical rooms. If the unit sits idle through a season without running, have your dealer verify the flywheel still holds vacuum and recommission it properly before returning it to service.

UPS1000S common service parts

Part numberPart
240-2526Filter Element-Encl AirCheck fitment →
244-4995Filter As-ElectricalCheck fitment →
244-4994Filter As-ElectricalCheck fitment →
244-4988Filter As-ElectricalCheck fitment →

Always confirm against your machine's serial number — cross-check any part in Heavy Parts AI before ordering.

UPS1000S fault codes & troubleshooting

CodeMeaningLikely causeWhat to do
SUMMARY FAULT / SYSTEM FAULTMaster fault indication that one or more critical subsystems (inverter, static switch, control power, or flywheel module) has latched a fault and self-diagnostics have flagged the unit for attention.Any underlying subsystem alarm bundled into one top-level indicator; root cause is only identified by drilling into the touchscreen alarm history.Open the alarm/event log on the touchscreen operator interface to find the specific underlying alarm, then contact a factory-certified UPS technician before clearing.
ON BYPASSLoad has been transferred off the UPS inverter onto the static/maintenance bypass source.Input voltage or frequency outside the programmable acceptance window, an output overload the inverter cannot carry, or a manual/scheduled bypass command.Check incoming utility voltage and frequency against the programmable input range, confirm no downstream overload, and return the unit to normal mode once the condition clears.
OVERLOADOutput current has exceeded the unit's continuous overload rating.Connected critical load exceeds the module's rated kVA, or a downstream short/ground fault is drawing excess current.Compare measured output amps to the nameplate rated output current, shed non-essential load, and inspect downstream feeders for faults.
LOSS OF UTILITY / INPUT FAULTNormal AC input has dropped outside the programmable voltage or frequency window, or been interrupted outright.Utility outage, upstream breaker trip, or generator set not yet online to backfeed the input.Verify utility or standby generator supply at the input terminals, confirm the flywheel took the load through the disturbance, and check the optional generator-set start module status if fitted.
FLYWHEEL FAULT / LOW FLYWHEEL SPEEDThe flywheel energy-storage module is below rated speed and cannot deliver its full programmed ride-through time.A recent discharge event without enough recharge time (full recharge to rated speed typically takes a couple of minutes), or a flywheel bearing/vacuum-system problem.Allow the programmed recharge interval to complete before another disturbance, check the flywheel status indication on the touchscreen, and escalate to a factory-certified technician if speed will not recover.
COMMUNICATION / REMOTE MONITORING FAULTLoss of the link between the UPS control electronics and the remote status panel, modem, or Ethernet-based monitoring software.Failed or disconnected RS232/RS485 serial link, network cable, or modem connection.Check physical connections and network settings for the remote monitoring/Ethernet link and confirm the remote status panel LEDs are receiving power.

Codes and remedies are general guidance for this model family — always confirm with diagnostic tooling and your dealer before major repairs.

All UPS1000S assemblies by section

Every catalogued assembly group for the Caterpillar UPS1000S. Open an assembly to preview the parts inside — full OEM part numbers are available in Heavy Parts AI.

Electrical And Starting System
289-4938 Block As-Terminal
25***73Block As; (Thermal Switch)1
28***38Block As-Terminal1
See all parts with full part numbers in Heavy Parts AI →
239-9265 Board As-Circuit
20***73Fuse; (1-Ampere)2
23***65Board As-Circuit1
See all parts with full part numbers in Heavy Parts AI →
282-3659 Board As-Circuit
18***60Fuse; (2-Ampere)1
18***61Fuse; (5-Ampere)2
23***53Fuse; (5-Ampere)8
See all parts with full part numbers in Heavy Parts AI →
242-9373 Board As-Circuit
18***61Fuse; (5-Ampere)2
24***73Board As-Circuit1
See all parts with full part numbers in Heavy Parts AI →
242-7425 Board As-Circuit
18***56Fuse; (30-Ampere)(Output)2
24***46Fuse; (3.15-Ampere)2
24***25Board As-Circuit1
See all parts with full part numbers in Heavy Parts AI →
242-7420 Board As-Circuit
24***20Board As-Circuit1
27***58Board As-Circuit1
See all parts with full part numbers in Heavy Parts AI →
256-6468 Board As-Circuit
20***70Fuse; (4-Ampere)1
25***68Board As-Circuit1
See all parts with full part numbers in Heavy Parts AI →
235-6333 Board As-Circuit -Electro Magnetic Interference
23***51Capacitor3
23***33Board As-Circuit; -Electro Magnetic Interference1
See all parts with full part numbers in Heavy Parts AI →
242-7428 Board As-Circuit
19***99Fuse; (10-Ampere)1
23***53Fuse; (5-Ampere)1
24***46Fuse; (3.15-Ampere)1
See all parts with full part numbers in Heavy Parts AI →
242-7424 Board As-Circuit
242-7427 Board As-Circuit
20***73Fuse; (1-Ampere)1
24***27Board As-Circuit1
See all parts with full part numbers in Heavy Parts AI →
242-7423 Board As-Circuit
279-6656 Board As-Circuit
27***01Fuse; (3-Ampere)2
27***56Board As-Circuit1
See all parts with full part numbers in Heavy Parts AI →
242-7421 Board As-Circuit
24***46Fuse; (3.15-Ampere)1
24***21Board As-Circuit1
See all parts with full part numbers in Heavy Parts AI →
279-6658 Board As-Circuit
18***60Fuse; (2-Ampere)1
24***56Fuse; (0.5-Ampere)3
24***57Fuse; (2.5-Ampere)1
See all parts with full part numbers in Heavy Parts AI →
242-7422 Board As-Circuit
242-9375 Board As-Circuit
18***60Fuse; (2-Ampere)1
18***61Fuse; (5-Ampere)2
23***53Fuse; (5-Ampere)8
See all parts with full part numbers in Heavy Parts AI →
242-9376 Board As-Circuit
18***54Fuse; (20-Ampere)(Output)1
19***99Fuse; (10-Ampere)2
20***67Fuse; (1-Ampere)1
See all parts with full part numbers in Heavy Parts AI →
244-8756 Board As-Circuit
242-9374 Board As-Circuit
20***73Fuse; (1-Ampere)2
24***74Board As-Circuit1
See all parts with full part numbers in Heavy Parts AI →
242-7429 Board As-Circuit
24***29Board As-Circuit1
24***51Capacitor6
See all parts with full part numbers in Heavy Parts AI →
279-6655 Board As-Circuit -Controller
19***04Fuse; (3-Ampere)3
23***29Battery; (Lithium)1
23***53Fuse; (5-Ampere)1
See all parts with full part numbers in Heavy Parts AI →
239-9264 Board As-Circuit
23***29Battery; (Lithium)1
23***64Board As-Circuit1
See all parts with full part numbers in Heavy Parts AI →
245-1599 Board As-Circuit
239-9266 Board As-Circuit
23***29Battery; (Lithium)1
23***66Board As-Circuit1
See all parts with full part numbers in Heavy Parts AI →
294-2080 Bus Bar As -4-Wire
24***29Board As-Circuit3
29***80Bus Bar As; -4-Wire1
See all parts with full part numbers in Heavy Parts AI →
244-7567 Bus Bar As
24***49Bus6
24***67Angle6
24***67Bus Bar As1
See all parts with full part numbers in Heavy Parts AI →
257-8458 Bus Bar As
257-8455 Bus Bar As
257-8287 Bus Bar As
25***87Bus Bar As1
25***89Circuit Breaker As; (1600-Ampere)(Neutral)1
See all parts with full part numbers in Heavy Parts AI →
257-7944 Bus Bar As
24***29Board As-Circuit2
25***44Bus Bar As1
See all parts with full part numbers in Heavy Parts AI →
254-3922 Bus Bar As
259-9050 Bus Bar As
257-7943 Bus Bar As
245-2869 Bus Bar Gp
245-2874 Bus Bar Gp
24***74Bus Bar Group1
24***21Bus1
24***22Bus1
See all parts with full part numbers in Heavy Parts AI →
245-2906 Bus Bar Gp
24***06Bus Bar Group1
24***07Bar As1
24***08Bar As1
See all parts with full part numbers in Heavy Parts AI →
245-2866 Bus Bar Gp
24***43Bar-Bus1
24***44Bar-Bus1
24***45Bar-Bus1
See all parts with full part numbers in Heavy Parts AI →
245-4778 Cable Gp -External Source Synchronizing
24***70Cable As1
24***71Cable As1
24***77Cable As1
See all parts with full part numbers in Heavy Parts AI →
245-4775 Cable Gp -Generator Start, Dual
24***75Cable Group; -Generator Start, Dual1
25***20Cable1
25***21Cable1
See all parts with full part numbers in Heavy Parts AI →
245-4774 Cable Gp -Generator Start Option Output Circuit Breaker
24***74Cable Group; -Generator Start Option Output Circuit Breaker1
25***20Cable1
25***21Cable1
See all parts with full part numbers in Heavy Parts AI →
259-6318 Circuit Breaker & Mounting Gp -System I/O
25***18Circuit Breaker & Mounting Group; -System I/O1
25***19Circuit Breaker As; (2000-Ampere)1
See all parts with full part numbers in Heavy Parts AI →
245-2868 Circuit Breaker & Mounting Gp
24***24Circuit Breaker As; (1600-Ampere)1
24***68Circuit Breaker & Mounting Group1
See all parts with full part numbers in Heavy Parts AI →
257-7945 Circuit Breaker & Mounting Gp
25***43Bus Bar As1
25***45Circuit Breaker & Mounting Group1
25***46Circuit Breaker As; (1600-Ampere)1
See all parts with full part numbers in Heavy Parts AI →
257-8456 Circuit Breaker & Mounting Gp
25***55Bus Bar As1
25***56Circuit Breaker & Mounting Group1
25***57Circuit Breaker As; (4-Pole, 1600-Ampere, 600-Volt)1
See all parts with full part numbers in Heavy Parts AI →
244-7556 Circuit Breaker & Mounting Gp -System I/O
24***19Circuit Breaker As; (1600-Ampere)1
24***56Circuit Breaker & Mounting Group; -System I/O1
See all parts with full part numbers in Heavy Parts AI →
258-5032 Circuit Breaker & Mounting Gp
25***32Circuit Breaker & Mounting Group1
25***34Circuit Breaker As; (2000-Ampere)1
See all parts with full part numbers in Heavy Parts AI →
244-1408 Conduit Gp
24***08Conduit Group1
27***81Cable; (24-Ga)(Yellow)1
27***82Cable; (24-Ga)(Grey)1
See all parts with full part numbers in Heavy Parts AI →
258-6904 Connection Gp-Electrical -Maintenance Bypass, 4-Wire
25***04Connection Group-Electrical; -Maintenance Bypass, 4-Wire1
See all parts with full part numbers in Heavy Parts AI →
244-6991 Contactor As
24***67Contactor; (230-Volt)1
24***91Contactor As1
See all parts with full part numbers in Heavy Parts AI →
244-4989 Contactor Gp
24***89Contactor Group1
24***91Contactor As2
See all parts with full part numbers in Heavy Parts AI →
203-3971 Diskette
203-3976 Diskette
276-9057 Fuse Gp
24***01Block; (Terminal End)(Fuse)2
24***37Fuse; (2.5-Ampere)2
25***70Block1
See all parts with full part numbers in Heavy Parts AI →
245-0537 Fuse Gp -Static Switch
24***20Block-Fuse; (2-Pole)(2-Pole)2
24***20Block-Fuse; (3-Pole)1
24***37Fuse; (2.5-Ampere)4
See all parts with full part numbers in Heavy Parts AI →
245-3637 Fuse Gp -Inverter, Neutral
19***71Fuse; (63-Ampere)1
24***81Holder; (Fuse)2
24***97Switch; (Fuse)1
See all parts with full part numbers in Heavy Parts AI →
244-4996 Fuse Gp -Control
20***77Fuse; (200-Ampere)1
20***69Indicator; (Fuse)1
24***96Fuse Group; -Control1
See all parts with full part numbers in Heavy Parts AI →
276-9059 Fuse Gp
19***97Fuse; (3-Ampere)6
24***01Block; (Terminal End)(Fuse)3
24***53Fuse; (1-Ampere)3
See all parts with full part numbers in Heavy Parts AI →
294-2081 Fuse Gp
24***53Fuse; (1-Ampere)4
27***50Block-Fuse1
29***81Fuse Group1
See all parts with full part numbers in Heavy Parts AI →
293-5402 Kit-Switch -Emergency Power Off
28***13Switch As-Push Button; (Emergency Power Off)1
29***02Kit-Switch; -Emergency Power Off1
See all parts with full part numbers in Heavy Parts AI →
257-8288 Neutral Bus Bar As
244-8658 Panel Gp-Circuit Breaker
24***75Panel Group-Circuit Breaker1
24***58Panel Group-Circuit Breaker1
See all parts with full part numbers in Heavy Parts AI →
244-7576 Panel Gp-Circuit Breaker
24***07Plate1
24***09Block-Terminal; (4-Pole)1
24***76Panel Group-Circuit Breaker1
See all parts with full part numbers in Heavy Parts AI →
244-8659 Panel Gp-Circuit Breaker
24***76Panel Group-Circuit Breaker1
24***59Panel Group-Circuit Breaker1
See all parts with full part numbers in Heavy Parts AI →
244-7571 Panel Gp-Circuit Breaker
24***24Circuit Breaker As; (1600-Ampere)1
24***56Circuit Breaker & Mounting Group; -System I/O1
24***71Panel Group-Circuit Breaker1
See all parts with full part numbers in Heavy Parts AI →
244-7575 Panel Gp-Circuit Breaker
24***07Plate2
24***09Block-Terminal; (4-Pole)1
24***75Panel Group-Circuit Breaker1
See all parts with full part numbers in Heavy Parts AI →
254-5985 Panel Gp-Circuit Breaker
24***26Circuit Breaker As; (1600-Ampere)1
24***56Circuit Breaker & Mounting Group; -System I/O1
25***85Panel Group-Circuit Breaker1
See all parts with full part numbers in Heavy Parts AI →
244-8660 Panel Gp-Circuit Breaker
24***75Panel Group-Circuit Breaker1
24***60Panel Group-Circuit Breaker1
See all parts with full part numbers in Heavy Parts AI →
244-8661 Panel Gp-Circuit Breaker
24***76Panel Group-Circuit Breaker1
24***61Panel Group-Circuit Breaker1
See all parts with full part numbers in Heavy Parts AI →
259-3170 Panel Gp-Circuit Breaker
25***34Circuit Breaker As; (2000-Ampere)1
25***70Panel Group-Circuit Breaker1
25***18Circuit Breaker & Mounting Group; -System I/O1
See all parts with full part numbers in Heavy Parts AI →
265-5574 Resistor As
261-7479 Resistor As
26***79Resistor As1
26***81Kit-Resistor Wire; (12-Ohm, 500-Watt)1
See all parts with full part numbers in Heavy Parts AI →
243-3782 Sensor Gp-Temperature -Flywheel Bearing
20***52. Coller, Sensor-Vacuum; (Flywheel Bearing)1
24***13Retainer; (Gauge)1
24***82Sensor Group-Temperature; -Flywheel Bearing1
See all parts with full part numbers in Heavy Parts AI →
289-4936 Strip As-Terminal
18***52Fuse; (2-Ampere)(Input)8
24***37Fuse; (2.5-Ampere)2
24***53Fuse; (1-Ampere)4
See all parts with full part numbers in Heavy Parts AI →
245-0560 Switch As -Static
24***07Plate4
24***09Block-Terminal; (4-Pole)2
24***60Switch As; -Static1
See all parts with full part numbers in Heavy Parts AI →
253-8957 Switch As-Power -Remote Emergency Stop
25***72Switch-Push Button; (Remote Emergency Stop)1
25***57Switch As-Power; -Remote Emergency Stop1
See all parts with full part numbers in Heavy Parts AI →
294-5574 Switch As-Push Button -Emergency Power Off
28***13Switch As-Push Button; (Emergency Power Off)1
29***74Switch As-Push Button; -Emergency Power Off1
See all parts with full part numbers in Heavy Parts AI →
294-2078 Switch As-Selector -Service Mode
29***89Switch; (Select)1
29***78Switch As-Selector; -Service Mode1
See all parts with full part numbers in Heavy Parts AI →
287-5712 Switch Gp-Push Button -Emergency Power Off
28***12Switch Group-Push Button; -Emergency Power Off1
28***13Switch As-Push Button; (Emergency Power Off)1
See all parts with full part numbers in Heavy Parts AI →
290-3873 Switch Gp-Temperature
26***25Switch-Thermal; (150-Deg)(Transformer)3
26***26Switch-Thermal; (160-Deg)(Transformer)3
26***27Thermistor3
See all parts with full part numbers in Heavy Parts AI →
263-0793 Transformer As
26***25Switch-Thermal; (150-Deg)(Transformer)3
26***26Switch-Thermal; (160-Deg)(Transformer)3
26***27Thermistor3
See all parts with full part numbers in Heavy Parts AI →
245-0534 Transformer As
24***10Transformer As-Current; (Ratio 2000:5)3
24***34Transformer As1
See all parts with full part numbers in Heavy Parts AI →
290-3872 Transformer Gp
24***10Transformer As-Current; (Ratio 2000:5)1
29***72Transformer Group1
See all parts with full part numbers in Heavy Parts AI →
291-1075 Transformer Gp
29***73Switch Group-Temperature1
29***21Base1
29***75Transformer Group1
See all parts with full part numbers in Heavy Parts AI →
245-0564 Transformer Gp-Current
24***10Transformer As-Current; (Ratio 2000:5)3
24***64Transformer Group-Current1
See all parts with full part numbers in Heavy Parts AI →
Enclosures, Guards And Bases
244-7601 Baffle As-Air Flow
24***01Baffle As-Air Flow1
24***38Resistor; (5000-Ohm, 175-Watt)6
See all parts with full part numbers in Heavy Parts AI →
290-6621 Base
244-7369 Base As
244-4993 Fan As-Circulating
24***50Guard-Fan; (Fan)1
24***94Fan As-Circulating1
24***93Fan As-Circulating1
See all parts with full part numbers in Heavy Parts AI →
243-3794 Fan As-Circulating
24***94Fan As-Circulating1
24***43Cable As; (Control)1
24***44Cable As; (Power)1
See all parts with full part numbers in Heavy Parts AI →
256-6472 Fan Gp-Circulating
24***93Fan As-Circulating3
25***71Panel As-Electrical1
25***72Fan Group-Circulating1
See all parts with full part numbers in Heavy Parts AI →
243-3792 Fan Gp-Circulating
24***92Fan Group-Circulating1
24***94Fan As-Circulating3
See all parts with full part numbers in Heavy Parts AI →
244-7593 Fan Gp-Circulating -Plenum
24***94Fan As-Circulating2
24***93Fan Group-Circulating; -Plenum1
See all parts with full part numbers in Heavy Parts AI →
244-4991 Fan Gp-Circulating
24***91Fan Group-Circulating1
24***93Fan As-Circulating3
See all parts with full part numbers in Heavy Parts AI →
290-3858 Fan Gp-Circulating
24***93Fan As-Circulating4
29***58Fan Group-Circulating1
See all parts with full part numbers in Heavy Parts AI →
244-8753 Fan Gp-Circulating -Plenum
24***93Fan Group-Circulating; -Plenum1
24***53Fan Group-Circulating; -Plenum1
See all parts with full part numbers in Heavy Parts AI →
245-0565 Fan Gp-Circulating
24***85Resistor; (25-Ohm, 650-Watt)1
24***93Fan As-Circulating3
24***65Fan Group-Circulating1
See all parts with full part numbers in Heavy Parts AI →
244-7545 Frame As
24***55Bar-Bus; (Ground)1
24***56Bar-Bus; (Tie In)2
24***45Frame As1
See all parts with full part numbers in Heavy Parts AI →
294-3319 Frame As -Internal Components
24***84Panel Group-Electrical1
24***85Panel Group-Electrical1
24***86Panel Group-Electrical1
See all parts with full part numbers in Heavy Parts AI →
257-4950 Frame As
245-2870 Frame As
24***56Bar-Bus; (Tie In)2
24***39Cleat; (Base)2
24***70Frame As1
See all parts with full part numbers in Heavy Parts AI →
Operator Station
237-9613 Adapter-Communication
23***13Adapter-Communication1
26***06Cable1
See all parts with full part numbers in Heavy Parts AI →
130-3349 Control Gp-Alarm Module
13***49Control Group-Alarm Module1
22***41Screw; (5/16-18x0.875-In)16
22***42Seal-O-Ring1
See all parts with full part numbers in Heavy Parts AI →
243-3783 Coupling Gp-Vacuum
24***83Coupling Group-Vacuum1
3J***54Packing,Preformed Part Of Kit P/N 5r***271
9S***02Plug-O-Ring; (Straight Thread O-Ring)1
See all parts with full part numbers in Heavy Parts AI →
257-8454 Enclosure Gp-Power Supply
25***51Enclosure Group-Power Supply1
25***45Circuit Breaker & Mounting Group1
25***54Enclosure Group-Power Supply1
See all parts with full part numbers in Heavy Parts AI →
244-4981 Enclosure Gp-Power Supply
24***11Handle; (Door)1
24***16Screen; (Front)2
24***24Ring1
See all parts with full part numbers in Heavy Parts AI →
244-7596 Enclosure Gp-Power Supply
24***56Enclosure Group-Power Supply1
24***59Panel Group-Electrical1
24***96Enclosure Group-Power Supply1
See all parts with full part numbers in Heavy Parts AI →
245-2767 Enclosure Gp-Power Supply
24***29Door; (Lh)1
24***11Handle; (Door)2
24***23Plate; (Rear)1
See all parts with full part numbers in Heavy Parts AI →
244-4979 Enclosure Gp-Power Supply
20***31Switch-Push Button; (Emergency Module Off)1
20***33Switch; (Key)(Emergency Stop)1
23***85Key; (Control)1
See all parts with full part numbers in Heavy Parts AI →
244-7581 Enclosure Gp-Power Supply
24***41Panel Group-Electrical1
24***55Panel Group-Electrical1
24***56Circuit Breaker & Mounting Group; -System I/O1
See all parts with full part numbers in Heavy Parts AI →
244-4997 Enclosure Gp-Power Supply
24***83Panel Group-Electrical1
24***84Panel Group-Electrical1
24***85Panel Group-Electrical1
See all parts with full part numbers in Heavy Parts AI →
245-4772 Enclosure Gp-Power Supply
24***32Switch-Push Button; (Bypass)2
24***05Panel Group-Electrical1
24***72Enclosure Group-Power Supply1
See all parts with full part numbers in Heavy Parts AI →
244-1407 Enclosure Gp-Power Supply
24***06Fitting1
24***12Fitting1
24***61Clamp2
See all parts with full part numbers in Heavy Parts AI →
326-6080 Enclosure Gp-Power Supply
259-1170 Enclosure Gp-Power Supply
25***51Enclosure Group-Power Supply1
25***56Circuit Breaker & Mounting Group1
25***59Cable; (Ground)2
See all parts with full part numbers in Heavy Parts AI →
244-7384 Enclosure Gp-Power Supply
24***30Panel; (Main, Top)1
24***32Panel; (Subpanel, Top)2
24***31Plate; (Side, Rh)1
See all parts with full part numbers in Heavy Parts AI →
245-0529 Enclosure Gp-Power Supply
24***31Plate; (Side, Rh)1
24***11Handle; (Door)2
24***16Screen; (Front)4
See all parts with full part numbers in Heavy Parts AI →
259-9049 Enclosure Gp-Power Supply
24***71Panel Group-Circuit Breaker1
24***72Panel Group-Electrical1
24***06Bus Bar Group1
See all parts with full part numbers in Heavy Parts AI →
256-6479 Enclosure Gp-Power Supply
24***37Panel Group-Power Supply1
25***79Enclosure Group-Power Supply1
25***70Enclosure Group-Power Supply1
See all parts with full part numbers in Heavy Parts AI →
326-5094 Enclosure Gp-Power Supply
25***51Enclosure Group-Power Supply1
25***50Bus Bar As1
32***94Enclosure Group-Power Supply1
See all parts with full part numbers in Heavy Parts AI →
257-4951 Enclosure Gp-Power Supply
24***11Handle; (Door)2
24***16Screen; (Front)2
24***23Plate; (Rear)1
See all parts with full part numbers in Heavy Parts AI →
244-7356 Enclosure Gp-Power Supply
20***73Fuse; (1-Ampere)2
24***19Board As-Circuit; (Remote Status)1
24***89Cable As1
See all parts with full part numbers in Heavy Parts AI →
257-4952 Enclosure Gp-Power Supply
25***66Panel; (Bottom)1
25***67Panel; (Top)1
25***50Frame As1
See all parts with full part numbers in Heavy Parts AI →
244-4982 Enclosure Gp-Power Supply
24***27Board As-Circuit1
24***82Enclosure Group-Power Supply1
See all parts with full part numbers in Heavy Parts AI →
244-4995 Filter As-Electrical
244-4994 Filter As-Electrical
24***77Inductor6
24***94Filter As-Electrical1
See all parts with full part numbers in Heavy Parts AI →
244-4988 Filter As-Electrical
243-3796 Flywheel Gp-Power Supply
18***09Resistor; (13-Watt)2
24***42Capacitor; (600-Volt)24
24***96Flywheel Group-Power Supply1
See all parts with full part numbers in Heavy Parts AI →
244-1409 Flywheel Gp-Power Supply
24***97Switch; (Fuse)2
24***35Capacitor; (1200-Volt)2
24***44Capacitor; (450-Volt)8
See all parts with full part numbers in Heavy Parts AI →
244-8714 Module As -Solid-State Switch
23***35Seal-O-Ring2
23***04Pump & Motor Group-Vacuum1
24***12Fitting1
See all parts with full part numbers in Heavy Parts AI →
250-7959 Module Gp-Alarm
24***03Board As-Circuit; (Digital Gate Drive)1
25***59Module Group-Alarm1
See all parts with full part numbers in Heavy Parts AI →
240-1892 Module Gp-Converter
24***92Module Group-Converter1
24***87Fuse; (250-Ampere)2
24***97Switch; (Fuse)2
See all parts with full part numbers in Heavy Parts AI →
240-1663 Module Gp-Converter
13***49Control Group-Alarm Module1
19***39Film-Control Panel1
24***63Module Group-Converter1
See all parts with full part numbers in Heavy Parts AI →
236-4957 Panel Ar-Control
23***48Panel Group-Control; -Generator Start2
23***50Bracket4
23***57Panel Ar-Control; -Generator Start, Single1
See all parts with full part numbers in Heavy Parts AI →
236-4956 Panel Ar-Control
23***48Panel Group-Control; -Generator Start1
23***50Bracket2
23***56Panel Ar-Control1
See all parts with full part numbers in Heavy Parts AI →
236-4958 Panel Ar-Control -Generator Start, Dual
23***48Panel Group-Control; -Generator Start1
23***50Bracket2
23***58Panel Ar-Control; -Generator Start, Dual1
See all parts with full part numbers in Heavy Parts AI →
236-4955 Panel Ar-Control
22***37Fuse; (63-Ampere)5
23***55Panel Ar-Control1
24***15Panel Group-Electrical; -Converter Module3
See all parts with full part numbers in Heavy Parts AI →
256-6471 Panel As-Electrical
24***11Relay-Time Delay; (Back Feed Circuit)1
24***12Socket1
24***63Clip1
See all parts with full part numbers in Heavy Parts AI →
245-1678 Panel As-Electrical
24***22Board As-Circuit1
24***23Board As-Circuit2
24***78Panel As-Electrical1
See all parts with full part numbers in Heavy Parts AI →
244-7547 Panel As-Electrical
24***47Panel As-Electrical1
24***39Cleat; (Base)2
See all parts with full part numbers in Heavy Parts AI →
244-4990 Panel As-Electrical
23***48Panel Group-Control; -Generator Start2
23***50Bracket4
24***90Panel As-Electrical1
See all parts with full part numbers in Heavy Parts AI →
287-6148 Panel As-Electrical -Neutral Fuse
20***01Transformer; (230-Volt)1
24***21Transformer; (630-Volt)1
24***41Thermistor; (10-Ampere)(10-Ampere)2
See all parts with full part numbers in Heavy Parts AI →
245-2872 Panel As-Electrical
20***03Transformer; (230-Volt)1
24***91Thermistor; (10-Ohm)1
24***39Cleat; (Base)2
See all parts with full part numbers in Heavy Parts AI →
245-0563 Panel As-Electrical
20***66Fuse; (7-Ampere)2
24***03Fuse; (30-Ampere)3
24***07Plate2
See all parts with full part numbers in Heavy Parts AI →
256-6477 Panel As-Electrical
23***65Board As-Circuit1
24***07Headliner3
24***22Board As-Circuit1
See all parts with full part numbers in Heavy Parts AI →
294-2079 Panel As-Electrical
24***62Diode As; (Bridge)1
24***37Fuse Group; -Inverter, Neutral6
29***79Panel As-Electrical1
See all parts with full part numbers in Heavy Parts AI →
294-2918 Panel As-Electrical
26***74Resistor As3
29***81Fuse Group1
29***18Panel As-Electrical1
See all parts with full part numbers in Heavy Parts AI →
256-6478 Panel As-Electrical
20***01Transformer; (230-Volt)2
24***41Thermistor; (10-Ampere)(10-Ampere)2
25***73Block As; (Thermal Switch)1
See all parts with full part numbers in Heavy Parts AI →
233-7648 Panel Gp-Control -Generator Start
23***48Panel Group-Control; -Generator Start1
23***53Capacitor2
23***56Circuit Breaker As; (25-Ampere)1
See all parts with full part numbers in Heavy Parts AI →
245-0562 Panel Gp-Electrical
24***55Bar-Bus; (Ground)1
24***62Panel Group-Electrical2
24***63Panel As-Electrical1
See all parts with full part numbers in Heavy Parts AI →
244-7565 Panel Gp-Electrical
24***41Panel Group-Electrical1
24***65Panel Group-Electrical2
24***67Bus Bar As1
See all parts with full part numbers in Heavy Parts AI →
240-2515 Panel Gp-Electrical -Converter Module
24***15Panel Group-Electrical; -Converter Module1
26***36Board As; (Field Coil Driver)2
See all parts with full part numbers in Heavy Parts AI →
244-4998 Panel Gp-Electrical
24***88Filter As-Electrical1
24***89Contactor Group1
24***90Panel As-Electrical1
See all parts with full part numbers in Heavy Parts AI →
312-8583 Panel Gp-Electrical
20***02Transformer; (230-Volt)4
24***21Transformer; (630-Volt)1
24***41Thermistor; (10-Ampere)(10-Ampere)5
See all parts with full part numbers in Heavy Parts AI →
244-7555 Panel Gp-Electrical
24***36Panel Group-Electrical1
24***69Base As1
24***45Frame As1
See all parts with full part numbers in Heavy Parts AI →
244-7541 Panel Gp-Electrical
24***27Board As-Circuit1
24***41Panel Group-Electrical1
29***95Block As-Terminal1
See all parts with full part numbers in Heavy Parts AI →
244-4983 Panel Gp-Electrical
20***31Switch-Push Button; (Emergency Module Off)1
22***40Cover; (Secondary Stop)1
24***99Display1
See all parts with full part numbers in Heavy Parts AI →
244-7562 Panel Gp-Electrical
24***51Panel; (Front)1
24***29Switch-Push Button; (Transformer Temperature Status)1
24***62Panel Group-Electrical2
See all parts with full part numbers in Heavy Parts AI →
259-1395 Panel Gp-Electrical
24***72Panel Group-Electrical1
24***06Bus Bar Group1
25***95Panel Group-Electrical1
See all parts with full part numbers in Heavy Parts AI →
279-3994 Panel Gp-Electrical -Fuse
24***72Panel Group-Electrical1
24***06Bus Bar Group1
25***85Panel Group-Circuit Breaker1
See all parts with full part numbers in Heavy Parts AI →
244-7604 Panel Gp-Electrical
24***74Transducer; (1000-Ampere)4
24***01Baffle As-Air Flow2
24***04Panel Group-Electrical1
See all parts with full part numbers in Heavy Parts AI →
244-4984 Panel Gp-Electrical
23***64Board As-Circuit1
24***09Block-Terminal; (4-Pole)1
24***07Transformer As; (1-Va)6
See all parts with full part numbers in Heavy Parts AI →
243-3780 Panel Gp-Electrical
24***06Switch-Disconnect; (3-Pole, 400-Amp, Fusible)1
24***10Shaft1
24***15Contact1
See all parts with full part numbers in Heavy Parts AI →
244-4986 Panel Gp-Electrical
19***99Fuse; (10-Ampere)2
20***66Fuse; (7-Ampere)2
20***67Fuse; (1-Ampere)2
See all parts with full part numbers in Heavy Parts AI →
244-7570 Panel Gp-Electrical
24***43Bar-Bus1
24***44Bar-Bus1
24***45Bar-Bus1
See all parts with full part numbers in Heavy Parts AI →
243-3791 Panel Gp-Electrical
24***08Block1
24***22Board As-Circuit1
24***74Board As-Circuit1
See all parts with full part numbers in Heavy Parts AI →
240-1898 Panel Gp-Electrical
23***53Capacitor2
23***57Fuse; (0.25-Ampere)2
23***59Relay; (24-Volt)(Control Panel)2
See all parts with full part numbers in Heavy Parts AI →
289-4941 Panel Gp-Electrical
20***70Fuse; (4-Ampere)1
24***05Block1
28***41Panel Group-Electrical1
See all parts with full part numbers in Heavy Parts AI →
245-0889 Panel Gp-Electrical
24***61Fuse; (1000-Ampere)1
24***14Module As; -Solid-State Switch1
24***61Filter As-Electrical; (Capacitor)1
See all parts with full part numbers in Heavy Parts AI →
244-4987 Panel Gp-Electrical
24***87Panel Group-Electrical2
24***91Fan Group-Circulating1
24***94Filter As-Electrical1
See all parts with full part numbers in Heavy Parts AI →
245-0539 Panel Gp-Electrical
24***34Transformer As1
24***37Fuse Group; -Static Switch1
24***39Panel Group-Electrical2
See all parts with full part numbers in Heavy Parts AI →
243-3781 Panel Gp-Electrical
24***91Thermistor; (10-Ohm)1
24***99Diode1
24***01Block; (Terminal End)(Fuse)5
See all parts with full part numbers in Heavy Parts AI →
243-3793 Panel Gp-Electrical
23***66Board As-Circuit1
24***93Panel Group-Electrical1
See all parts with full part numbers in Heavy Parts AI →
244-4980 Panel Gp-Electrical
24***63Module Group-Converter1
24***92Module Group-Converter1
24***98Panel Group-Electrical1
See all parts with full part numbers in Heavy Parts AI →
244-7572 Panel Gp-Electrical
24***03Fuse; (30-Ampere)2
24***04Block-Fuse; (2-Pole)1
24***72Panel Group-Electrical1
See all parts with full part numbers in Heavy Parts AI →
243-3795 Panel Gp-Electrical
24***07Handle1
24***18Panel1
24***29Switch-Push Button; (Transformer Temperature Status)1
See all parts with full part numbers in Heavy Parts AI →
244-4985 Panel Gp-Electrical
20***65Fuse; (4-Ampere)3
23***72Transformer; (10-Ampere)1
24***01Block; (Terminal End)(Fuse)4
See all parts with full part numbers in Heavy Parts AI →
245-2805 Panel Gp-Electrical
24***91Thermistor; (10-Ohm)1
24***22Transformer1
24***05Panel Group-Electrical1
See all parts with full part numbers in Heavy Parts AI →
243-3779 Panel Gp-Electrical
24***79Panel Group-Electrical1
24***99Board As-Circuit1
See all parts with full part numbers in Heavy Parts AI →
289-4942 Panel Gp-Electrical
23***65Board As-Circuit1
24***07Headliner3
24***22Board As-Circuit1
See all parts with full part numbers in Heavy Parts AI →
245-0530 Panel Gp-Electrical
24***82Block-Terminal2
24***46Fuse; (3.15-Ampere)5
24***52Fuse; (15-Ampere)1
See all parts with full part numbers in Heavy Parts AI →
244-7574 Panel Gp-Electrical
20***65Fuse; (4-Ampere)2
24***04Block-Fuse; (2-Pole)1
24***74Panel Group-Electrical1
See all parts with full part numbers in Heavy Parts AI →
253-8959 Panel Gp-Electrical
19***99Fuse; (10-Ampere)2
20***65Fuse; (4-Ampere)2
20***01Transformer; (230-Volt)2
See all parts with full part numbers in Heavy Parts AI →
245-1220 Panel Gp-Electrical
24***56Board As-Circuit1
24***20Panel Group-Electrical1
See all parts with full part numbers in Heavy Parts AI →
245-2871 Panel Gp-Electrical
24***66Bus Bar Group1
24***68Circuit Breaker & Mounting Group1
24***69Bus Bar Group1
See all parts with full part numbers in Heavy Parts AI →
244-8746 Panel Gp-Electrical
24***74Transducer; (1000-Ampere)4
24***01Baffle As-Air Flow2
24***46Panel Group-Electrical1
See all parts with full part numbers in Heavy Parts AI →
244-4504 Panel Gp-Electrical
22***36Board As-Circuit; (Dc Interface)1
24***45Resistor4
24***04Panel Group-Electrical1
See all parts with full part numbers in Heavy Parts AI →
244-7559 Panel Gp-Electrical
24***09Block-Terminal; (4-Pole)1
24***43Bar-Bus1
24***44Bar-Bus1
See all parts with full part numbers in Heavy Parts AI →
245-0888 Panel Gp-Electrical
19***99Fuse; (10-Ampere)2
23***32Relay; (1.8-Ampere, 3-Pole)(Overload)1
23***34Block-Terminal1
See all parts with full part numbers in Heavy Parts AI →
240-2736 Panel Gp-Electrical
24***67Capacitor; (1200-Volt)2
24***68Capacitor; (500-Volt)4
24***22Shroud1
See all parts with full part numbers in Heavy Parts AI →
245-0540 Panel Gp-Electrical
244-7602 Panel Gp-Electrical
23***65Board As-Circuit1
24***05Block-Fuse; (3-Pole)1
24***53Fuse; (1-Ampere)3
See all parts with full part numbers in Heavy Parts AI →
245-8339 Panel Gp-Power Supply
24***11Handle; (Door)1
24***16Screen; (Front)2
24***24Ring1
See all parts with full part numbers in Heavy Parts AI →
244-7577 Panel Gp-Power Supply
24***79Enclosure Group-Power Supply1
24***81Enclosure Group-Power Supply1
24***82Enclosure Group-Power Supply1
See all parts with full part numbers in Heavy Parts AI →
245-1234 Panel Gp-Power Supply
24***29Enclosure Group-Power Supply1
24***30Panel Group-Electrical1
24***34Panel Group-Power Supply1
See all parts with full part numbers in Heavy Parts AI →
257-4953 Panel Gp-Power Supply
24***37Panel Group-Power Supply1
25***53Panel Group-Power Supply1
25***01Panel Group-Power Supply; (Bottom Cable Entry)1
See all parts with full part numbers in Heavy Parts AI →
245-8341 Panel Gp-Power Supply
24***41Panel Group-Power Supply1
25***53Panel Group-Power Supply1
See all parts with full part numbers in Heavy Parts AI →
237-9614 Panel Gp-Power Supply
23***14Panel Group-Power Supply1
24***37Panel Group-Power Supply1
25***95Panel Group-Electrical1
See all parts with full part numbers in Heavy Parts AI →
290-3815 Panel Gp-Power Supply
24***11Handle; (Door)1
24***16Screen; (Front)2
24***24Ring1
See all parts with full part numbers in Heavy Parts AI →
237-9361 Panel Gp-Power Supply
23***61Panel Group-Power Supply1
24***01Panel Group-Power Supply2
See all parts with full part numbers in Heavy Parts AI →
245-0569 Panel Gp-Power Supply
24***56Enclosure Group-Power Supply1
24***84Enclosure Group-Power Supply1
24***69Panel Group-Power Supply1
See all parts with full part numbers in Heavy Parts AI →
237-9609 Panel Gp-Power Supply
23***09Panel Group-Power Supply1
24***01Panel Group-Power Supply4
See all parts with full part numbers in Heavy Parts AI →
257-8452 Panel Gp-Power Supply
24***11Handle; (Door)1
24***16Screen; (Front)2
24***24Ring1
See all parts with full part numbers in Heavy Parts AI →
253-8962 Panel Gp-Power Supply
24***81Enclosure Group-Power Supply1
25***62Panel Group-Power Supply1
See all parts with full part numbers in Heavy Parts AI →
245-2762 Panel Gp-Power Supply
24***08Conduit Group1
24***96Enclosure Group-Power Supply1
24***04Panel Group-Electrical1
See all parts with full part numbers in Heavy Parts AI →
244-4501 Panel Gp-Power Supply
24***01Panel Group-Power Supply1
24***97Enclosure Group-Power Supply1
25***59Module Group-Alarm1
See all parts with full part numbers in Heavy Parts AI →
294-2969 Panel Gp-Power Supply
24***11Handle; (Door)1
24***16Screen; (Front)2
24***26Filter Element-Encl Air2
See all parts with full part numbers in Heavy Parts AI →
259-7070 Panel Gp-Power Supply
24***11Handle; (Door)1
24***16Screen; (Front)2
24***26Filter Element-Encl Air2
See all parts with full part numbers in Heavy Parts AI →
259-8401 Panel Gp-Power Supply
24***01Panel Group-Power Supply1
25***01Panel Group-Power Supply1
See all parts with full part numbers in Heavy Parts AI →
237-9362 Panel Gp-Power Supply
23***62Panel Group-Power Supply1
24***01Panel Group-Power Supply3
See all parts with full part numbers in Heavy Parts AI →
246-2037 Panel Gp-Power Supply
24***37Panel Group-Power Supply1
25***52Panel Group-Power Supply1
See all parts with full part numbers in Heavy Parts AI →
245-8340 Panel Gp-Power Supply
24***40Panel Group-Power Supply1
25***79Enclosure Group-Power Supply1
25***01Panel Group-Power Supply1
See all parts with full part numbers in Heavy Parts AI →
253-8961 Panel Gp-Power Supply
24***62Panel Group-Power Supply1
24***67Enclosure Group-Power Supply1
25***61Panel Group-Power Supply1
See all parts with full part numbers in Heavy Parts AI →
294-2893 Panel Gp-Power Supply -Circuit Breaker, 4-Pole, 4-Wire
24***11Handle; (Door)2
24***16Screen; (Front)1
24***23Plate; (Rear)1
See all parts with full part numbers in Heavy Parts AI →
237-9360 Panel Gp-Power Supply
23***60Panel Group-Power Supply1
24***81Enclosure Group-Power Supply1
25***53Panel Group-Power Supply1
See all parts with full part numbers in Heavy Parts AI →
244-5000 Panel Gp-Power Supply
24***31Panel1
24***55Plate1
24***24Board As-Circuit2
See all parts with full part numbers in Heavy Parts AI →
237-9348 Power Gp-Uninterruptible
23***48Power Group-Uninterruptible1
24***00Panel Group-Power Supply1
24***77Panel Group-Power Supply1
See all parts with full part numbers in Heavy Parts AI →
294-3381 Power Gp-Uninterruptible -3-Pole, 4-Wire
24***69Panel Group-Power Supply1
24***34Panel Group-Power Supply1
24***39Panel Group-Power Supply1
See all parts with full part numbers in Heavy Parts AI →
263-3331 Power Gp-Uninterruptible
24***00Panel Group-Power Supply1
24***77Panel Group-Power Supply1
24***69Panel Group-Power Supply1
See all parts with full part numbers in Heavy Parts AI →
237-9347 Power Gp-Uninterruptible
23***47Power Group-Uninterruptible1
24***79Enclosure Group-Power Supply1
24***81Enclosure Group-Power Supply1
See all parts with full part numbers in Heavy Parts AI →
243-3784 Power Supply Gp
24***84Power Supply Group1
24***69Panel Group-Power Supply1
24***34Panel Group-Power Supply1
See all parts with full part numbers in Heavy Parts AI →
231-3504 Pump & Motor Gp-Vacuum
20***32Power Supply; (350-Watt)1
23***04Pump & Motor Group-Vacuum1
23***88Capacitor; (450-Volt)2
See all parts with full part numbers in Heavy Parts AI →
Service Equipment And Supplies
282-3515 Parts Gp-Miscellaneous -Parallel Controls
24***11Relay-Time Delay; (Back Feed Circuit)1
27***56Board As-Circuit1
28***15Parts Group-Miscellaneous; -Parallel Controls1
See all parts with full part numbers in Heavy Parts AI →
282-3516 Parts Gp-Miscellaneous -Separate Maintenance Bypass
18***61Fuse; (5-Ampere)20
19***71Fuse; (63-Ampere)1
19***99Fuse; (10-Ampere)10
See all parts with full part numbers in Heavy Parts AI →
244-8664 Parts Gp-Miscellaneous
18***61Fuse; (5-Ampere)20
19***71Fuse; (63-Ampere)5
19***99Fuse; (10-Ampere)10
See all parts with full part numbers in Heavy Parts AI →
Parts Group-Miscellaneous
20***70Fuse; (4-Ampere)3
24***11Relay-Time Delay; (Back Feed Circuit)1
24***28Board As-Circuit1
See all parts with full part numbers in Heavy Parts AI →
282-3513 Parts Gp-Miscellaneous -Parallel Maintenance Bypass
18***61Fuse; (5-Ampere)20
19***71Fuse; (63-Ampere)5
19***97Fuse; (3-Ampere)10
See all parts with full part numbers in Heavy Parts AI →
244-8663 Parts Gp-Miscellaneous
18***46Kit-Pump; (Vacuum)1
24***65Ring4
24***00Connector1
See all parts with full part numbers in Heavy Parts AI →
282-3512 Parts Gp-Miscellaneous -Base Unit Configuration, 4-Wire
18***56Fuse; (30-Ampere)(Output)2
19***99Fuse; (10-Ampere)2
20***32Power Supply; (350-Watt)1
See all parts with full part numbers in Heavy Parts AI →

UPS1000S serial number reference

On Cat UPS/flywheel power-supply cabinets the nameplate sits on the front or rear access panel of the enclosure/frame assembly, usually near the control or operator station panel rather than on an engine block. It lists the Product Identification Number as a 3-letter prefix followed by a sequence number (e.g. CZS1-up or CZE00001-up); read the letters against the parts or service manual's model-code table for this specific rating, since sibling ratings sharing one combined manual can carry their own distinct prefix rather than a common one.

PrefixIdentifies
CZSUPS1000S (paired with the ES12F flywheel cabinet frame)
CZEShared bundle range - confirm with dealer

Frequently asked questions

What engine does the Cat UPS1000S use?

None. The UPS1000S has no internal combustion engine. It is a flywheel-based static UPS module - a motor/generator paired with a sealed, spinning flywheel and an IGBT power-electronics cabinet - that bridges the load electrically until a separate standby generator, if installed, comes online.

What is the operating weight of the UPS1000S?

Not published for this exact 1000 kVA rating. Sibling single-module cabinets in the same family run from roughly 4,200 kg (about 9,350 lb) for the 750 kVA unit up into several-thousand-kilogram territory for larger multi-cabinet 1200 kVA systems, so weight varies by configuration - confirm the exact figure against the nameplate or with your dealer.

What replaced the UPS1000S?

There was no direct one-for-one replacement; the lineup grew sideways instead. Later single-module cabinets moved to contactless magnetic-bearing flywheels for lower maintenance, and the separate Z-series (300Z through 1200Z) offers a parallel, multi-module topology for scalable capacity - a different architecture rather than a straight successor to the 1000S.

What UPS1000S owners discuss

Is the UPS1000S actually a diesel engine-generator?
No. Despite showing up filed next to genset literature, the UPS1000S is the flywheel-based uninterruptible power supply module: a motor/generator paired with a sealed flywheel and a power electronics cabinet, not a standalone diesel engine. It sits in the roughly 1000 kVA tier alongside its 1200S sibling in the same catalog family. In a full backup power system it works next to a separate diesel generator set - the flywheel bridges the gap between a utility outage and the generator coming online, it does not burn fuel itself. Treat any spec sheet that lists cylinders, bore, or fuel consumption for this unit as belonging to the paired genset, not the UPS module itself.
How long does the flywheel actually ride through an outage before the generator has to pick up load?
Community and technical writeups on this flywheel UPS class describe a short bridging window, commonly quoted in the single digits up to roughly 10-15 seconds depending on connected load and configuration - enough to cover a utility sag or a normal generator start/transfer sequence, not an extended outage. Exact ride-through time varies by loading and by series, so treat any single number as a starting point and confirm against the nameplate and load calc for the specific installation rather than assuming one fixed figure.
What wears out first on these flywheel UPS units - is it really "maintenance-free"?
It is low-maintenance compared with a battery UPS, not zero-maintenance. The two wear items owners and techs flag most are the vacuum pump that maintains the low-pressure chamber around the spinning flywheel (commonly cited service life in the 8-10 year range) and the bearing set supporting the flywheel shaft. Units with mechanical bearings need periodic lubrication and bearing replacement, often cited around every 5-8 years; later designs using magnetic/contactless bearings cut that wear item way down since there is no physical contact in normal running. Routine checks are vacuum gauge/oil level, visual inspection for leaks or damage, and reviewing fault history on the operator interface. Because the flywheel stores significant kinetic energy at speed, have your dealer verify bearing and vacuum system condition before returning a long-idle unit to service.
What actually fails electrically on this equipment - is it the flywheel or something else?
Owners and techs report the power electronics section - the rectifier/inverter power modules and the control/logic board - as the more common fault point, not the mechanical flywheel itself. Typical triggers are overcurrent or overtemperature events (blocked cooling, degraded heat sinks), aging DC bus capacitors that lose capacitance gradually before failing, and control-board faults from component aging or firmware issues. A fault code pointing at the inverter or rectifier stage should be diagnosed at the electronics cabinet first before assuming a flywheel or bearing problem.
Can a field tech pull the flywheel assembly apart for service?
No. Removal and installation of the flywheel assembly is not treated as a field service task in the documentation for this product line - it is factory/dealer-level work. The flywheel spins at high speed inside a sealed, evacuated housing, and opening that housing outside of a proper service procedure is both a warranty issue and a safety issue given the stored rotational energy. Any suspected internal flywheel or magnetic-bearing fault should go to Cat dealer service rather than being opened in the field. Have your dealer verify before any attempt to service the flywheel enclosure.
The parts catalog also lists an S-series and a Z-series Cat UPS - are those the same product as the UPS1000S?
No, and mixing up the two families is a common research mistake. The S-series (which includes this UPS1000S and its UPS1200S sibling) is a single-module, line-interactive flywheel UPS sized for one power rating per unit. The Z-series is a different, later multi-module system built from smaller kVA blocks that can be paralleled together for scalable, redundant capacity - its literature covers different building-block ratings and cannot be assumed to apply to the UPS1000S's own spec sheet. Keep spec pulls, maintenance intervals, and topology notes separated by series rather than borrowing numbers across them.
What should I check before buying a used UPS1000S?
Get the maintenance history first: how many running hours/years on the vacuum pump and bearing set, and whether they are within or past the commonly cited service windows (vacuum pump around 8-10 years, mechanical bearings around 5-8 years). Ask whether the flywheel chamber has held vacuum during any idle/storage period - a unit sitting unused for a long time may need dealer recommissioning before it can hold optimum vacuum again at speed. Get a run/spin test and a review of the operator interface fault log rather than relying on a visual check alone. Confirm overall unit age against the general 15-20 year expected service life quoted for this class of flywheel UPS, and don't assume remaining life just because the cabinet looks clean. Given the stored kinetic energy in a spinning flywheel, have your dealer verify bearing, vacuum, and control electronics condition before commissioning a used unit into service.

Compiled from owner and technician discussions across the industry — experiences vary by serial range and machine history.

Need a specific UPS1000S part?

Search live OEM part data, check fitment, and cross-reference alternatives with Heavy Parts AI.