The Tripper,circuit Breaker, cataloged under National Stock Number 5925-00-899-9904, is classified within Federal Supply Class 5925 (Circuit Breakers) of the Electrical and Electronic Equipment Components group. Government technical data includes 20 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5925-00-899-9904 |
| Item Name | Tripper,circuit Breaker |
| FSC / FSG | 5925 / 59 — Circuit Breakers |
| Status | ACTIVE |
| Operating Voltage Type and Rating Per Pole in Volts | 500.0 AC ALL LOCATIONS |
| Mounting Facility Type and Quantity | 4 UNTHREADED HOLE(S)4 UNTHREADED HOLE(S) |
| Actuator Position Designation | AT POLE TWO |
| Frequency in Hertz | 400.0 ALL LOCATIONS |
| Body Style | RECTANGULAR DIMENSIONAL ENVELOPERECTANGULAR DIMENSIONAL ENVELOPE |
| Ultimate Trip Rating of Continuous Current Rating Per Pole in Percent | 145.0 ALL LOCATIONS |
| Adjustable Trip Setting Current Range Per Pole in Amps | +910.0 TO 1560.0 AC ALL LOCATIONS |
| Circuit Protection Type | OVERCURRENT ALL LOCATIONS |
| Storage Type | GENERAL PURPOSE WAREHOUSEGENERAL PURPOSE WAREHOUSE |
| Unthreaded Mounting Hole Diameter | 0.203 INCHES NOMINAL0.203 INCHES NOMINAL IN |
| Pole Quantity | 33 |
| Maximum Continuous Load Current Rating Per Pole | 175.0 AMPERES AC ALL LOCATIONS |
| Features Provided | ADJUSTABLE TRIP RELEASEADJUSTABLE TRIP RELEASE |
| Trip Release Characteristic | INSTANTANEOUS AND TIME DELAY ALL LOCATIONS |
| Trip Delay Time in Seconds Per Rated Continuous Current | 6.000 MINIMUM AT 200 PCT AND 20.000 MAXIMUM AT 200 PCT ALL LOCATIONS |
| Manual Actuator Type and Quantity | 1 TOGGLE |
| Actuator Function | TRIP-RESET |
| Trip Release Ambient Temp Rating | 50.0 CELSIUS NOMINAL 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 |
| Reference | Meaning |
|---|---|
| 457D446G22 | 3/9 Design control — primary reference Westinghouse Electric Corp Control Business Unit |
| S457D446G22 | 5/9 Secondary reference Westinghouse Electric Corp Control Business Unit |
NSN 5925-00-899-9904 is a Tripper,circuit Breaker, classified under FSC 5925, Circuit Breakers. Status: active.
Key specifications for 5925-00-899-9904: Operating Voltage Type and Rating Per Pole in Volts: 500.0 AC ALL LOCATIONS; Mounting Facility Type and Quantity: 4 UNTHREADED HOLE(S)4 UNTHREADED HOLE(S); Overall Height: 6.000 INCHES NOMINAL6.000 INCHES NOMINAL IN; Actuator Position Designation: AT POLE TWO. 20 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.