The Tripper,circuit Breaker, cataloged under National Stock Number 5925-00-103-3880, 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 17 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5925-00-103-3880 |
| Primary Part Number | 457D452G28 |
| Item Name | Tripper,circuit Breaker |
| FSC / FSG | 5925 / 59 — Circuit Breakers |
| Manufacturer | Westinghouse Electric Corp |
| Status | ACTIVE |
| 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 |
| Body Style | RECTANGULAR DIMENSIONAL ENVELOPE |
| Ultimate Trip Rating of Continuous Current Rating Per Pole in Percent | 125.0 ALL LOCATIONS |
| Circuit Protection Type | OVERCURRENT ALL LOCATIONS |
| Storage Type | GENERAL PURPOSE WAREHOUSE |
| Unthreaded Mounting Hole Diameter | 0.344 INCHES NOMINAL IN |
| Pole Quantity | 3 |
| Maximum Continuous Load Current Rating Per Pole | 800.0 AMPERES AC ALL LOCATIONS |
| Trip Release Characteristic | TIME DELAY ALL LOCATIONS |
| Trip Delay Time in Seconds Per Rated Continuous Current | 280.000 MINIMUM AT 200 PCT AND 950.000 MAXIMUM AT 200 PCT ALL LOCATIONS |
| Actuator Function | TRIP-RESET |
| Trip Release Ambient Temp Rating | 40.0 CELSIUS MAXIMUM ALL LOCATIONS DEGC |
| Terminal Type and Quantity | 6 COMPRESSION |
| Trip Release Method | THERMAL-MAGNETIC ALL LOCATIONS |
| 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 |
|---|---|
| 457D452G28 PRIMARY | Westinghouse Electric Corp (USA) |
| HMA3800T PRIMARY | Westinghouse Electric Corp (USA) |
NSN 5925-00-103-3880 is a Tripper,circuit Breaker, manufactured by Westinghouse Electric Corp, classified under FSC 5925, Circuit Breakers. Status: active.
NSN 5925-00-103-3880 has 2 manufacturer part numbers on file: 457D452G28 (Westinghouse Electric Corp), HMA3800T (Westinghouse Electric Corp).
Key specifications for 457D452G28: Operating Voltage Type and Rating Per Pole in Volts: 600.0 AC ALL LOCATIONS; Mounting Facility Type and Quantity: 4 UNTHREADED HOLE(S); Overall Height: 4.062 INCHES NOMINAL IN; Actuator Position Designation: AT POLE TWO. 17 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.