The Circuit Breaker, cataloged under National Stock Number 5925-00-449-1671, is classified within Federal Supply Class 5925 (Circuit Breakers) of the Electrical and Electronic Equipment Components group. Government technical data includes 23 specifications, cited from the U.S. Government catalog. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 5 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5925-00-449-1671 |
| Item Name | Circuit Breaker |
| FSC / FSG | 5925 / 59 — Circuit Breakers |
| Status | ACTIVE |
| Reset Method | MANUAL |
| Mounting Facility Type and Quantity | 2 THREADED HOLE(S) |
| Actuator Position Designation | AT POLE ONE |
| Fragility Factor | MODERATELY RUGGED |
| Body Style | SINGLE POLE TYPE |
| Distance Between Centerlines of Mounting Facilities Parallel to Body Length | 2.060 INCHES NOMINAL IN |
| Arc Quenching Method | AIR |
| Body Width | 0.750 INCHES NOMINAL IN |
| Storage Type | GENERAL PURPOSE WAREHOUSE |
| Pole Quantity | 1 |
| Mounting Surface to Terminal End Distance | 2.625 INCHES NOMINAL IN |
| Nominal Thread Size | 0.138 INCHES IN |
| Body Length | 2.490 INCHES NOMINAL IN |
| Manual Actuator Type and Quantity | 1 TOGGLE |
| Inclosure Protection Type for Which Designed | FUNGUS RESISTANT AND MOISTURE RESISTANT |
| Thread Quantity Per Inch | 32 |
| Material | PLASTIC CASE |
| Actuator Function | TRIP-RESET |
| Terminal Type and Quantity | 2 THREADED STUD |
| Main Contact Tripping Mechanism Type | TRIP FREE |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Boss Height | 0.150 INCHES NOMINAL IN |
| Center to Center Distance Between Terminals Parallel to Length | 1.940 INCHES NOMINAL IN |
| 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 |
|---|---|
| 020-400-0000-00 | 5/1 Secondary reference U.S. Government activity |
| 665598B91103-03 | 1/2 Source control — Government-approved source U.S. Government activity |
| 020-400-0000-03 | 5/1 Secondary reference U.S. Government activity |
| APL1-609-3 | 3/2 Design control — primary reference U.S. Government activity |
| 665598B91103-03 | 5/1 Secondary reference Lockheed Martin Corporation Dba Lockheed Martin Div Rotary and Mission Systems |
NSN 5925-00-449-1671 is a Circuit Breaker, classified under FSC 5925, Circuit Breakers. Status: active.
5 possible matches (shared part number, not a government interchangeability claim): 5925-00-449-1673, 5925-00-449-1674, 5925-00-449-1695. Verify interchangeability with system specifications before substitution.
Key specifications for 5925-00-449-1671: Reset Method: MANUAL; Mounting Facility Type and Quantity: 2 THREADED HOLE(S); Actuator Position Designation: AT POLE ONE; Fragility Factor: MODERATELY RUGGED. 23 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.