The Circuit Breaker, cataloged under National Stock Number 5925-01-496-7488, is classified within Federal Supply Class 5925 (Circuit Breakers) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Naval Sea Systems Command. Government technical data includes 19 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 4 items share a part number with this NSN in the catalog (possible match — not a government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 | 5925-01-496-7488 |
| Primary Part Number | 321-7539657 REV A ITEM NO.5 |
| Item Name | Circuit Breaker |
| FSC / FSG | 5925 / 59 — Circuit Breakers |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Bushing Length | 0.130 INCHES NOMINAL IN |
| Reset Method | MANUAL |
| Operating Voltage Type and Rating Per Pole in Volts | 240.0 AC ALL LOCATIONS |
| Mounting Facility Type and Quantity | 1 THREADED BUSHING WITH PANEL SEAL |
| Center to Center Distance Between Terminals Parallel to Width | 0.750 INCHES NOMINAL IN |
| Body Style | MULTIPOLE-SINGLE ACTUATOR TYPE |
| Ultimate Trip Rating of Continuous Current Rating Per Pole in Percent | 115.0 ALL LOCATIONS |
| Circuit Protection Type | OVERCURRENT ALL LOCATIONS |
| Body Width | 2.000 INCHES NOMINAL IN |
| Pole Quantity | 3 |
| Mounting Surface to Terminal End Distance | 2.265 INCHES NOMINAL IN |
| Maximum Continuous Load Current Rating Per Pole | 20.0 AMPERES AC ALL LOCATIONS |
| Trip Release Characteristic | TIME DELAY ALL LOCATIONS |
| Maximum Interrupting Capacity Current Type and Rating Per Pole in Amps | 2100.0 AC ALL LOCATIONS |
| Body Length | 1.260 INCHES NOMINAL IN |
| Material | PLASTIC CASE |
| Terminal Type and Quantity | 6 SCREW |
| Trip Release Method | MAGNETIC-HYDRAULIC ALL LOCATIONS |
| Center to Center Distance Between Terminals Parallel to Length | 1.530 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 |
| Part Number | Manufacturer |
|---|---|
| 321-7539657 REV A ITEM NO.5 | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 321-7539657 | D/9 Drawing number reference only Naval Sea Systems Command |
| APGN-666-1-42-203 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5925-01-496-7488 is a Circuit Breaker, manufactured by Naval Sea Systems Command, classified under FSC 5925, Circuit Breakers. Status: active.
NSN 5925-01-496-7488 has 1 manufacturer part number on file: 321-7539657 REV A ITEM NO.5 (Naval Sea Systems Command).
4 possible matches (shared part number, not a government interchangeability claim): 5925-01-496-7491, 5925-01-496-7496, 5925-01-496-7499. Verify interchangeability with system specifications before substitution.
Key specifications for 321-7539657 REV A ITEM NO.5: Bushing Length: 0.130 INCHES NOMINAL IN; Reset Method: MANUAL; Operating Voltage Type and Rating Per Pole in Volts: 240.0 AC ALL LOCATIONS; Mounting Facility Type and Quantity: 1 THREADED BUSHING WITH PANEL SEAL. 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.