The Circuit Breaker, cataloged under National Stock Number 5925-01-571-9549, is classified within Federal Supply Class 5925 (Circuit Breakers) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Hydraulics International, Inc. Dba Hydraulics International Inc. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Item Name | Circuit Breaker |
| FSC / FSG | 5925 — Circuit Breakers (FSG 59) |
| Manufacturers | Hydraulics International, Inc. Dba Hydraulics International Inc (CAGE 56529) |
| Parameter | Value |
|---|---|
| NSN | 5925-01-571-9549 |
| Primary Part Number | 3RV1021-4AA10 |
| Item Name | Circuit Breaker |
| FSC / FSG | 5925 / 59 — Circuit Breakers |
| Manufacturer | Hydraulics International, Inc. Dba Hydraulics International Inc |
| Status | ACTIVE |
| 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 |
|---|---|
| 3RV1021-4AA10 PRIMARY | Hydraulics International, Inc. Dba Hydraulics International Inc (USA) |
NSN 5925-01-571-9549 is a Circuit Breaker, manufactured by Hydraulics International, Inc. Dba Hydraulics International Inc, classified under FSC 5925, Circuit Breakers. Status: active.
NSN 5925-01-571-9549 has 1 manufacturer part number on file: 3RV1021-4AA10 (Hydraulics International, Inc. Dba Hydraulics International Inc).
1 possible match (shared part number, not a government interchangeability claim): 5925-01-668-2779. Verify interchangeability with system specifications before substitution.
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.