The Circuit Breaker, cataloged under National Stock Number 5925-01-258-4640, is classified within Federal Supply Class 5925 (Circuit Breakers) of the Electrical and Electronic Equipment Components group. Government technical data includes 30 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5925-01-258-4640 |
| Item Name | Circuit Breaker |
| FSC / FSG | 5925 / 59 — Circuit Breakers |
| Status | ACTIVE |
| Bushing Length | 0.400 INCHES NOMINAL0.400 INCHES NOMINAL IN |
| Reset Method | MANUAL |
| Internal Trip Release Configuration | SERIES TRIP SINGLE LOCATION |
| Operating Voltage Type and Rating Per Pole in Volts | 250.0 AC SINGLE LOCATION |
| Mounting Facility Type and Quantity | 1 THREADED BUSHING1 THREADED BUSHING |
| Actuator Position Designation | AT POLE ONE |
| Frequency in Hertz | 400.0 SINGLE LOCATION |
| Unpackaged Unit Weight | 1.200 OUNCES NOMINAL OZ |
| Body Style | SINGLE POLE TYPESINGLE POLE TYPE |
| Ultimate Trip Rating of Continuous Current Rating Per Pole in Percent | 150.0 SINGLE LOCATION |
| Arc Quenching Method | MAGNETIC BLOWOUTMAGNETIC BLOWOUT |
| Circuit Protection Type | OVERCURRENT SINGLE LOCATION |
| Body Width | 0.680 INCHES NOMINAL0.680 INCHES NOMINAL IN |
| Storage Type | GENERAL PURPOSE WAREHOUSEGENERAL PURPOSE WAREHOUSE |
| Pole Quantity | 11 |
| Mounting Surface to Terminal End Distance | 2.400 INCHES NOMINAL2.400 INCHES NOMINAL IN |
| Maximum Continuous Load Current Rating Per Pole | 500.0 MILLIAMPERES AC SINGLE LOCATION |
| Trip Release Characteristic | INSTANTANEOUS SINGLE LOCATION |
| Maximum Interrupting Capacity Current Type and Rating Per Pole in Amps | 1000.0 AC SINGLE LOCATION |
| Nominal Thread Size | 0.375 INCHES IN |
| Body Length | 1.380 INCHES NOMINAL1.380 INCHES NOMINAL IN |
| Manual Actuator Type and Quantity | 1 PUSH BUTTON |
| Inclosure Protection Type for Which Designed | FUNGUS RESISTANT |
| Thread Quantity Per Inch | 3232 |
| Material | PLASTIC CASE |
| Actuator Function | RESET |
| Terminal Type and Quantity | 2 TAB W/SCREW |
| Main Contact Tripping Mechanism Type | TRIP FREE |
| Thread Series Designator | UNEF |
| Trip Release Method | MAGNETIC SINGLE LOCATION |
| 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 |
|---|---|
| 2200-3017 | 3/9 Design control — primary reference U.S. Government activity |
| PR11-49-.500A-XX-S | 5/9 Secondary reference U.S. Government activity |
| PR11-49-.500A-XX | 5/2 Secondary reference U.S. Government activity |
NSN 5925-01-258-4640 is a Circuit Breaker, classified under FSC 5925, Circuit Breakers. Status: active.
Key specifications for 5925-01-258-4640: Bushing Length: 0.400 INCHES NOMINAL0.400 INCHES NOMINAL IN; Reset Method: MANUAL; Internal Trip Release Configuration: SERIES TRIP SINGLE LOCATION; Operating Voltage Type and Rating Per Pole in Volts: 250.0 AC SINGLE LOCATION. 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.