The Circuit Breaker, cataloged under National Stock Number 5925-01-321-1389, is classified within Federal Supply Class 5925 (Circuit Breakers) of the Electrical and Electronic Equipment Components group. Government technical data includes 19 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 5925-01-321-1389 |
| Item Name | Circuit Breaker |
| FSC / FSG | 5925 / 59 — Circuit Breakers |
| Status | ACTIVE |
| Reset Method | ELECTRIC |
| Internal Trip Release Configuration | SERIES TRIP W/AUXILIARY LOAD TERMINAL AND REMOTE TRIP FEATURE SINGLE LOCATION |
| Operating Voltage Type and Rating Per Pole in Volts | 115.0 AC AND 28.0 DC SINGLE LOCATION |
| Mounting Facility Type and Quantity | 2 UNTHREADED HOLE(S) |
| Frequency in Hertz | 400.0 SINGLE LOCATION |
| Ultimate Trip Rating of Continuous Current Rating Per Pole in Percent | 138.0 SINGLE LOCATION |
| Circuit Protection Type | OVERCURRENT SINGLE LOCATION |
| Unthreaded Mounting Hole Diameter | 0.172 INCHES NOMINAL IN |
| Pole Quantity | 1 |
| Maximum Continuous Load Current Rating Per Pole | 60.0 AMPERES AC AND 60.0 AMPERES DC SINGLE LOCATION |
| Features Provided | TRIP INDICATOR |
| Trip Release Characteristic | TIME DELAY SINGLE LOCATION |
| Maximum Interrupting Capacity Current Type and Rating Per Pole in Amps | 3600.0 AC AND 3600.0 DC SINGLE LOCATION |
| Trip Delay Time in Seconds Per Rated Continuous Current | 13.000 MINIMUM AT 200 PCT AND 60.000 MAXIMUM AT 200 PCT AND 2.600 MINIMUM AT 400 PCT AND 13.000 MAXIMUM AT 400 PCT AND 0.260 MINIMUM AT 1000 PCT AND 1.800 MAXIMUM AT 1000 PCT SINGLE LOCATION |
| Inclosure Protection Type for Which Designed | DUSTPROOF AND SAND RESISTANT AND HUMIDITY RESISTANT AND CORROSION RESISTANT AND EXPLOSION RESISTANT AND MOISTURE RESISTANT AND SHOCK RESISTANT AND VIBRATION RESISTANT |
| Auxiliary Trip Coil Voltage Type and Rating in Volts | 115.0 AC NOMINAL AND 28.0 DC NOMINAL SINGLE LOCATION |
| Trip Release Ambient Temp Rating | 25.0 CELSIUS NOMINAL SINGLE LOCATION DEGC |
| Main Contact Tripping Mechanism Type | TRIP FREE |
| Trip Release Method | THERMAL 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 |
|---|---|
| MIL-PRF-83383/2 | 4/1 Identification reference U.S. Government activity |
| M83383/02-10 | 2/2 Government specification standardization U.S. Government activity |
| MIL-C-83383/2 | 5/9 Secondary reference U.S. Government activity |
NSN 5925-01-321-1389 is a Circuit Breaker, classified under FSC 5925, Circuit Breakers. Status: active.
2 possible matches (shared part number, not a government interchangeability claim): 5925-01-424-2425, 5925-01-474-6032. Verify interchangeability with system specifications before substitution.
Key specifications for 5925-01-321-1389: Reset Method: ELECTRIC; Internal Trip Release Configuration: SERIES TRIP W/AUXILIARY LOAD TERMINAL AND REMOTE TRIP FEATURE SINGLE LOCATION; Operating Voltage Type and Rating Per Pole in Volts: 115.0 AC AND 28.0 DC SINGLE LOCATION; Mounting Facility Type and Quantity: 2 UNTHREADED HOLE(S). 19 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.