The Circuit Breaker, cataloged under National Stock Number 5925-01-304-6752, is classified within Federal Supply Class 5925 (Circuit Breakers) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Fki Engineering Ltd T/a Whipp & Bourne. Government technical data includes 7 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5925-01-304-6752 |
| Primary Part Number | 4284021-2 |
| Item Name | Circuit Breaker |
| FSC / FSG | 5925 / 59 — Circuit Breakers |
| Manufacturer | Fki Engineering Ltd T/a Whipp & Bourne |
| Status | ACTIVE |
| Reset Method | AUTOMATIC |
| Body Style | MULTIPOLE-SINGLE ACTUATOR TYPE |
| Circuit Protection Type | OVERCURRENT ALL LOCATIONS |
| Supplementary Features | ALSO UNDERVOLTAGE TRIP |
| Pole Quantity | 3 |
| Trip Release Method | MAGNETIC AND SOLID STATE ALL LOCATIONS |
| Auxiliary Switch Function and Quantity | 15 CONTROL |
| 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 |
|---|---|
| 4284021-2 | Fki Engineering Ltd T/a Whipp & Bourne (GBR) |
| Reference | Meaning |
|---|---|
| 4284021-2 | 3/9 Design control — primary reference International Circuit Breaker Co Div of Equus Power Systems Corp |
NSN 5925-01-304-6752 is a Circuit Breaker, manufactured by Fki Engineering Ltd T/a Whipp & Bourne, classified under FSC 5925, Circuit Breakers. Status: active.
NSN 5925-01-304-6752 has 1 manufacturer part number on file: 4284021-2 (Fki Engineering Ltd T/a Whipp & Bourne).
Key specifications for 4284021-2: Reset Method: AUTOMATIC; Body Style: MULTIPOLE-SINGLE ACTUATOR TYPE; Circuit Protection Type: OVERCURRENT ALL LOCATIONS; Supplementary Features: ALSO UNDERVOLTAGE TRIP. 7 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.