The Thermal Release,circuit Breaker, cataloged under National Stock Number 5925-01-539-9181, is classified within Federal Supply Class 5925 (Circuit Breakers) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Potter and Brumfield Inc a Siemens Co. Government technical data includes 2 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Item Name | Thermal Release,circuit Breaker |
| FSC / FSG | 5925 — Circuit Breakers (FSG 59) |
| Manufacturers | Potter and Brumfield Inc a Siemens Co (CAGE 0K5V0) |
| Parameter | Value |
|---|---|
| NSN | 5925-01-539-9181 |
| Primary Part Number | 44F945 |
| Item Name | Thermal Release,circuit Breaker |
| FSC / FSG | 5925 / 59 — Circuit Breakers |
| Manufacturer | Potter and Brumfield Inc a Siemens Co |
| Status | ACTIVE |
| Mounting Configuration | 3/8-24 THREADED BUSHING |
| Overload Rating in Amps | 200.000 NOMINAL |
| 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 |
|---|---|
| 44F945 PRIMARY | Potter and Brumfield Inc a Siemens Co (USA) |
| Reference | Meaning |
|---|---|
| 12421610-005 | 7/2 Vendor item drawing reference U S Army Tank Automotive Command Amsta-Im-Mm |
| 12421610 | D/9 Drawing number reference only U S Army Tank Automotive Command Amsta-Im-Mm |
NSN 5925-01-539-9181 is a Thermal Release,circuit Breaker, manufactured by Potter and Brumfield Inc a Siemens Co, classified under FSC 5925, Circuit Breakers. Status: active.
NSN 5925-01-539-9181 has 1 manufacturer part number on file: 44F945 (Potter and Brumfield Inc a Siemens Co).
2 possible matches (shared part number, not a government interchangeability claim): 5925-01-563-7547, 5925-01-727-7515. Verify interchangeability with system specifications before substitution.
Key specifications for 44F945: Overall Height: 1.384 INCHES NOMINAL IN; Overall Length: 2.993 INCHES NOMINAL IN; Overall Width: 0.690 INCHES NOMINAL IN; Mounting Configuration: 3/8-24 THREADED BUSHING. 2 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.