The Circuit Breaker, cataloged under National Stock Number 5925-00-252-1554, is classified within Federal Supply Class 5925 (Circuit Breakers) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Westinghouse Electric Corp. Government technical data includes 30 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5925-00-252-1554 |
| Primary Part Number | KA3125STYLE4282983 |
| Item Name | Circuit Breaker |
| FSC / FSG | 5925 / 59 — Circuit Breakers |
| Manufacturer | Westinghouse Electric Corp |
| Status | ACTIVE |
| Reset Method | MANUAL |
| Operating Voltage Type and Rating Per Pole in Volts | 600.0 AC ALL LOCATIONS |
| Mounting Facility Type and Quantity | 4 UNTHREADED HOLE(S) |
| Actuator Position Designation | AT POLE TWO |
| Frequency in Hertz | 60.0 ALL LOCATIONS |
| Center to Center Distance Between Terminals Parallel to Width | 1.359 INCHES NOMINAL IN |
| Body Style | MULTIPOLE-SINGLE ACTUATOR TYPE |
| Ultimate Trip Rating of Continuous Current Rating Per Pole in Percent | 125.0 ALL LOCATIONS |
| Distance Between Centerlines of Mounting Facilities Parallel to Body Length | 8.437 INCHES NOMINAL IN |
| Circuit Protection Type | OVERCURRENT ALL LOCATIONS |
| Body Width | 5.500 INCHES NOMINAL IN |
| Body Height | 4.062 INCHES NOMINAL IN |
| Unthreaded Mounting Hole Diameter | 0.281 INCHES NOMINAL IN |
| Pole Quantity | 3 |
| Maximum Continuous Load Current Rating Per Pole | 125.0 AMPERES AC ALL LOCATIONS |
| Trip Release Characteristic | TIME DELAY ALL LOCATIONS |
| Maximum Interrupting Capacity Current Type and Rating Per Pole in Amps | 2500.0 AC ALL LOCATIONS |
| Body Length | 10.125 INCHES NOMINAL IN |
| Trip Delay Time in Seconds Per Rated Continuous Current | 160.000 MINIMUM AT 200 PCT AND 500.000 MAXIMUM AT 200 PCT ALL LOCATIONS |
| Manual Actuator Type and Quantity | 1 TOGGLE |
| Distance Between Centerlines of Mounting Facilities Parallel to Body Width | 1.359 INCHES NOMINAL IN |
| Inclosure Protection Type for Which Designed | FUNGUS RESISTANT AND MOISTURE RESISTANT |
| Material | PLASTIC CASE |
| Actuator Function | TRIP-RESET |
| Trip Release Ambient Temp Rating | 40.0 CELSIUS MAXIMUM ALL LOCATIONS DEGC |
| Terminal Type and Quantity | 6 COMPRESSION |
| Main Contact Tripping Mechanism Type | TRIP FREE |
| Boss Height | 0.260 INCHES NOMINAL IN |
| Trip Release Method | THERMAL-MAGNETIC ALL LOCATIONS |
| Center to Center Distance Between Terminals Parallel to Length | 8.875 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| KA3125STYLE4282983 PRIMARY | Westinghouse Electric Corp (USA) |
| Reference | Meaning |
|---|---|
| 1349-12 | 5/9 Secondary reference Regulators Products Group of Ward Leonard Electric Co Inc |
| 803005-0-169 | 5/1 Secondary reference U.S. Government activity |
| 803005-0-169 | 5/9 Secondary reference U.S. Government activity |
NSN 5925-00-252-1554 is a Circuit Breaker, manufactured by Westinghouse Electric Corp, classified under FSC 5925, Circuit Breakers. Status: active.
NSN 5925-00-252-1554 has 1 manufacturer part number on file: KA3125STYLE4282983 (Westinghouse Electric Corp).
1 possible match (shared part number, not a government interchangeability claim): 5315-01-607-1907. Verify interchangeability with system specifications before substitution.
Key specifications for KA3125STYLE4282983: Reset Method: MANUAL; Operating Voltage Type and Rating Per Pole in Volts: 600.0 AC ALL LOCATIONS; Mounting Facility Type and Quantity: 4 UNTHREADED HOLE(S); Actuator Position Designation: AT POLE TWO. 30 specifications are documented in the U.S. Government catalog.
Possible hazard — SDS may be required (DLA HMIC P). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.