The Tripper,circuit Breaker, cataloged under National Stock Number 5925-00-803-5488, 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 18 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5925-00-803-5488 |
| Primary Part Number | 457D446G20 |
| Item Name | Tripper,circuit Breaker |
| FSC / FSG | 5925 / 59 — Circuit Breakers |
| Manufacturer | Westinghouse Electric Corp |
| Status | ACTIVE |
| Internal Trip Release Configuration | SERIES TRIP ALL LOCATIONS |
| Operating Voltage Type and Rating Per Pole in Volts | 500.0 AC ALL LOCATIONS |
| Mounting Facility Type and Quantity | 3 UNTHREADED HOLE(S) |
| Ultimate Trip Time Per Pole in Seconds | 3600.000 NOMINAL ALL LOCATIONS |
| Frequency in Hertz | 400.0 ALL LOCATIONS |
| Body Style | RECTANGULAR DIMENSIONAL ENVELOPE |
| Ultimate Trip Rating of Continuous Current Rating Per Pole in Percent | 150.0 ALL LOCATIONS |
| Adjustable Trip Setting Current Range Per Pole in Amps | +625.0 TO 1300.0 AC ALL LOCATIONS |
| Circuit Protection Type | OVERCURRENT ALL LOCATIONS |
| Unthreaded Mounting Hole Diameter | 0.375 INCHES NOMINAL IN |
| Pole Quantity | 3 |
| Maximum Continuous Load Current Rating Per Pole | 150.0 AMPERES AC ALL LOCATIONS |
| Features Provided | ADJUSTABLE TRIP RELEASE |
| Trip Release Characteristic | TIME DELAY ALL LOCATIONS |
| Trip Delay Time in Seconds Per Rated Continuous Current | 100.000 MINIMUM AT 200 PCT AND 300.000 MAXIMUM AT 200 PCT ALL LOCATIONS |
| Trip Release Ambient Temp Rating | 50.0 CELSIUS NOMINAL ALL LOCATIONS DEGC |
| Terminal Type and Quantity | 6 SCREW |
| Trip Release Method | THERMAL ALL LOCATIONS |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 457D446G20 | Westinghouse Electric Corp (USA) |
| Reference | Meaning |
|---|---|
| 4570446G20 | 5/9 Secondary reference Westinghouse Electric Corp Control Business Unit |
| S457D446G20 | 5/9 Secondary reference Westinghouse Electric Corp Control Business Unit |
| 457D446G20 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5925-00-803-5488 is a Tripper,circuit Breaker, manufactured by Westinghouse Electric Corp, classified under FSC 5925, Circuit Breakers. Status: active.
NSN 5925-00-803-5488 has 1 manufacturer part number on file: 457D446G20 (Westinghouse Electric Corp).
Key specifications for 457D446G20: Internal Trip Release Configuration: SERIES TRIP ALL LOCATIONS; Operating Voltage Type and Rating Per Pole in Volts: 500.0 AC ALL LOCATIONS; Mounting Facility Type and Quantity: 3 UNTHREADED HOLE(S); Overall Height: 4.500 INCHES NOMINAL IN. 18 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.
NSN 5925-00-803-5488 has DEMIL Code B. Demilitarization may be required before disposal or transfer to non-military entities.
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.