The Circuit Breaker, cataloged under National Stock Number 5925-01-437-9172, is classified within Federal Supply Class 5925 (Circuit Breakers) of the Electrical and Electronic Equipment Components group. Government technical data includes 20 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 4 items share a part number with this NSN in the catalog (possible match — not a government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 | 5925-01-437-9172 |
| Item Name | Circuit Breaker |
| FSC / FSG | 5925 / 59 — Circuit Breakers |
| Status | ACTIVE |
| Reset Method | MANUAL |
| Operating Voltage Type and Rating Per Pole in Volts | 240.0 AC AND 50.0 DC ALL LOCATIONS |
| Mounting Facility Type and Quantity | 2 THREADED BUSHING WITH PANEL SEAL |
| Actuator Position Designation | BETWEEN POLE ONE AND TWO |
| Frequency in Hertz | 60.0 OR 400.0 ALL LOCATIONS |
| Center to Center Distance Between Terminals Parallel to Width | 0.625 INCHES NOMINAL IN |
| Body Style | MULTIPOLE-MULTIPLE ACTUATOR TYPE |
| Switch Location and Position Designation | EXTERNAL BETWEEN POLE ONE AND TWO |
| Circuit Protection Type | OVERCURRENT ALL LOCATIONS |
| Body Width | 1.281 INCHES MAXIMUM IN |
| Unthreaded Mounting Hole Diameter | 0.250 INCHES NOMINAL IN |
| Pole Quantity | 2 |
| Body Length | 1.562 INCHES MAXIMUM IN |
| Manual Actuator Type and Quantity | 1 TOGGLE |
| Actuator Function | TRIP-RESET |
| Terminal Type and Quantity | 4 TAB W/SCREW |
| Main Contact Tripping Mechanism Type | TRIP FREE |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Trip Release Method | MAGNETIC ALL LOCATIONS |
| Center to Center Distance Between Terminals Parallel to Length | 0.906 INCHES MAXIMUM IN |
| 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 |
|---|---|
| MIL-PRF-39019/3 | 4/1 Identification reference U.S. Government activity |
| MIL-PRF-39019 | 5/9 Secondary reference U.S. Government activity |
| M39019/03-254S | 2/2 Government specification standardization U.S. Government activity |
NSN 5925-01-437-9172 is a Circuit Breaker, classified under FSC 5925, Circuit Breakers. Status: active.
4 possible matches (shared part number, not a government interchangeability claim): 5925-01-464-8026, 5925-01-500-2704, 5925-01-530-7738. Verify interchangeability with system specifications before substitution.
Key specifications for 5925-01-437-9172: Reset Method: MANUAL; Operating Voltage Type and Rating Per Pole in Volts: 240.0 AC AND 50.0 DC ALL LOCATIONS; Mounting Facility Type and Quantity: 2 THREADED BUSHING WITH PANEL SEAL; Actuator Position Designation: BETWEEN POLE ONE AND TWO. 20 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.