The Circuit Breaker, cataloged under National Stock Number 5925-00-620-3971, is classified within Federal Supply Class 5925 (Circuit Breakers) of the Electrical and Electronic Equipment Components group. Government technical data includes 30 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5925-00-620-3971 |
| Item Name | Circuit Breaker |
| FSC / FSG | 5925 / 59 — Circuit Breakers |
| Status | ACTIVE |
| Reset Method | MANUAL |
| Operating Voltage Type and Rating Per Pole in Volts | 125.0 AC AND 125.0 DC ALL LOCATIONS |
| Mounting Facility Type and Quantity | 2 THREADED STUD(S) |
| Actuator Position Designation | AT POLE TWO |
| Ultimate Trip Time Per Pole in Seconds | 3600.000 NOMINAL ALL LOCATIONS |
| Frequency in Hertz | 60.0 ALL LOCATIONS |
| Center to Center Distance Between Terminals Parallel to Width | 1.125 INCHES NOMINAL IN |
| Body Style | MULTIPOLE-SINGLE ACTUATOR TYPE |
| Ultimate Trip Rating of Continuous Current Rating Per Pole in Percent | 138.0 ALL LOCATIONS |
| External Actuator Linkage Arrangement | ONE, TWO, AND THREE LINKED |
| Distance Between Centerlines of Mounting Facilities Parallel to Body Length | 0.500 INCHES NOMINAL IN |
| Circuit Protection Type | OVERCURRENT ALL LOCATIONS |
| Body Width | 3.344 INCHES NOMINAL IN |
| Body Height | 3.375 INCHES NOMINAL IN |
| Pole Quantity | 3 |
| Maximum Continuous Load Current Rating Per Pole | 30.0 AMPERES AC AND 30.0 AMPERES DC ALL LOCATIONS |
| Trip Release Characteristic | INSTANTANEOUS AND TIME DELAY ALL LOCATIONS |
| Maximum Interrupting Capacity Current Type and Rating Per Pole in Amps | 5000.0 AC AND 5000.0 DC ALL LOCATIONS |
| Nominal Thread Size | 0.216 INCHES IN |
| Body Length | 4.125 INCHES NOMINAL IN |
| Trip Delay Time in Seconds Per Rated Continuous Current | 10.000 MINIMUM AT 125 PCT AND 100.000 MAXIMUM AT 125 PCT ALL LOCATIONS |
| Manual Actuator Type and Quantity | 1 TOGGLE |
| Distance Between Centerlines of Mounting Facilities Parallel to Body Width | 2.937 INCHES NOMINAL IN |
| Inclosure Protection Type for Which Designed | SHOCKPROOF AND VIBRATIONPROOF |
| Test Data Document | 81349-MIL-C-17588 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.). |
| Thread Quantity Per Inch | 24 |
| Material | PLASTIC CASE |
| Actuator Function | TRIP-RESET |
| Trip Release Ambient Temp Rating | 50.0 CELSIUS NOMINAL ALL LOCATIONS DEGC |
| Terminal Type and Quantity | 6 QUICK DISCONNECT, MALE |
| 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 |
|---|---|
| ETN1064 | C/1 Advisory reference — outside the item-of-supply concept L3harris Maritime Power & Energy Solutions, Inc. Dba Spd Electrical Systems, Inc. |
| MIL-C-17588 | 4/1 Identification reference U.S. Government activity |
| ALB5-30A | 2/2 Government specification standardization U.S. Government activity |
NSN 5925-00-620-3971 is a Circuit Breaker, classified under FSC 5925, Circuit Breakers. Status: active.
Key specifications for 5925-00-620-3971: Reset Method: MANUAL; Operating Voltage Type and Rating Per Pole in Volts: 125.0 AC AND 125.0 DC ALL LOCATIONS; Mounting Facility Type and Quantity: 2 THREADED STUD(S); Actuator Position Designation: AT POLE TWO. 30 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.