The Circuit Breaker, cataloged under National Stock Number 5925-01-324-5259, is classified within Federal Supply Class 5925 (Circuit Breakers) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Whipp & Bourne Inc.. Government technical data includes 9 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 4 items share a part number with this NSN in the catalog (possible match — not a government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 | 5925-01-324-5259 |
| Primary Part Number | 4294021-6 |
| Item Name | Circuit Breaker |
| FSC / FSG | 5925 / 59 — Circuit Breakers |
| Manufacturer | Whipp & Bourne Inc. |
| Status | ACTIVE |
| Reset Method | AUTOMATIC AND MANUAL |
| Operating Voltage Type and Rating Per Pole in Volts | 450.0 AC ALL LOCATIONS |
| Frequency in Hertz | 60.0 ALL LOCATIONS |
| Circuit Protection Type | OVERCURRENT ALL LOCATIONS |
| Pole Quantity | 3 |
| Features Provided | TRIP INDICATOR |
| Trip Release Characteristic | INSTANTANEOUS AND TIME DELAY ALL LOCATIONS |
| Maximum Interrupting Capacity Current Type and Rating Per Pole in Amps | 4000.0 AC ALL LOCATIONS |
| Trip Release Method | 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 |
NSN 5925-01-324-5259 is a Circuit Breaker, manufactured by Whipp & Bourne Inc., classified under FSC 5925, Circuit Breakers. Status: active.
NSN 5925-01-324-5259 has 2 manufacturer part numbers on file: 4294021-6 (Whipp & Bourne Inc.), 4294021-6 (Fki Engineering Ltd T/a Whipp & Bourne).
4 possible matches (shared part number, not a government interchangeability claim): 5925-01-324-5260, 5925-01-336-6879, 5925-01-336-6881. Verify interchangeability with system specifications before substitution.
Key specifications for 4294021-6: Reset Method: AUTOMATIC AND MANUAL; Operating Voltage Type and Rating Per Pole in Volts: 450.0 AC ALL LOCATIONS; Frequency in Hertz: 60.0 ALL LOCATIONS; Circuit Protection Type: OVERCURRENT ALL LOCATIONS. 9 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.