The Tripper,circuit Breaker, cataloged under National Stock Number 5925-00-839-0293, is classified within Federal Supply Class 5925 (Circuit Breakers) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Wesco Distribution, Inc. Div Harrisburg Pa. Government technical data includes 16 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5925-00-839-0293 |
| Primary Part Number | 452D371G26 |
| Item Name | Tripper,circuit Breaker |
| FSC / FSG | 5925 / 59 — Circuit Breakers |
| Manufacturer | Wesco Distribution, Inc. Div Harrisburg Pa |
| Status | ACTIVE |
| Operating Voltage Type and Rating Per Pole in Volts | 500.0 AC AND 250.0 DC ALL LOCATIONS |
| Mounting Facility Type and Quantity | 3 UNTHREADED HOLE(S) |
| Frequency in Hertz | 60.0 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 | +650.0 TO 1300.0 AC AND +650.0 TO 1300.0 DC ALL LOCATIONS |
| Circuit Protection Type | OVERCURRENT ALL LOCATIONS |
| Unthreaded Mounting Hole Diameter | 0.438 INCHES NOMINAL IN |
| Pole Quantity | 3 |
| Maximum Continuous Load Current Rating Per Pole | 250.0 AMPERES AC AND 250.0 AMPERES DC ALL LOCATIONS |
| Features Provided | ADJUSTABLE TRIP RELEASE |
| Trip Release Characteristic | INSTANTANEOUS AND TIME DELAY ALL LOCATIONS |
| Trip Delay Time in Seconds Per Rated Continuous Current | 1200.000 NOMINAL AT 150 PCT AND 60.000 MINIMUM AT 300 PCT AND 120.000 MAXIMUM AT 300 PCT ALL LOCATIONS |
| Trip Release Ambient Temp Rating | 50.0 CELSIUS NOMINAL ALL LOCATIONS DEGC |
| Terminal Type and Quantity | 6 BUS BAR |
| 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 |
|---|---|
| 452D371G26 | Wesco Distribution, Inc. Div Harrisburg Pa (USA) |
| 452D371G26 | Westinghouse Electric Corp (USA) |
| Reference | Meaning |
|---|---|
| 452D371G26 | 3/2 Design control — primary reference U.S. Government activity |
| S452D371G26 | 5/9 Secondary reference Westinghouse Electric Corp Control Business Unit |
| 900J376-452D371G26 | 5/2 Secondary reference U.S. Government activity |
NSN 5925-00-839-0293 is a Tripper,circuit Breaker, manufactured by Wesco Distribution, Inc. Div Harrisburg Pa, classified under FSC 5925, Circuit Breakers. Status: active.
NSN 5925-00-839-0293 has 2 manufacturer part numbers on file: 452D371G26 (Wesco Distribution, Inc. Div Harrisburg Pa), 452D371G26 (Westinghouse Electric Corp).
Key specifications for 452D371G26: Operating Voltage Type and Rating Per Pole in Volts: 500.0 AC AND 250.0 DC ALL LOCATIONS; Mounting Facility Type and Quantity: 3 UNTHREADED HOLE(S); Overall Height: 3.500 INCHES NOMINAL IN; Frequency in Hertz: 60.0 ALL LOCATIONS. 16 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.