The Circuit Breaker, cataloged under National Stock Number 5925-01-396-1124, is classified within Federal Supply Class 5925 (Circuit Breakers) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (drawings). Government technical data includes 30 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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.
| Parameter | Value |
|---|---|
| NSN | 5925-01-396-1124 |
| Primary Part Number | 87057-038 |
| Item Name | Circuit Breaker |
| FSC / FSG | 5925 / 59 — Circuit Breakers |
| Manufacturer | Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (drawings) |
| Status | ACTIVE |
| Bushing Length | 0.380 INCHES MAXIMUM IN |
| Reset Method | MANUAL |
| Internal Trip Release Configuration | SERIES TRIP ALL LOCATIONS |
| Operating Voltage Type and Rating Per Pole in Volts | 240.0 AC AND 50.0 DC ALL LOCATIONS |
| Mounting Facility Type and Quantity | 1 THREADED BUSHING WITH PANEL SEAL |
| Actuator Position Designation | BETWEEN POLE ONE AND TWO |
| Switch Terminal Type | TAB, SOLDER LUG |
| Frequency in Hertz | 400.0 ALL LOCATIONS |
| Center to Center Distance Between Terminals Parallel to Width | 0.625 INCHES NOMINAL IN |
| Body Style | MULTIPOLE-SINGLE ACTUATOR TYPE |
| Switch Voltage Rating and Type in Volts | 120.0 AC AND 50.0 DC |
| Ultimate Trip Rating of Continuous Current Rating Per Pole in Percent | 150.0 ALL LOCATIONS |
| Switch Location and Position Designation | INTERNAL AT POLE ONE |
| Circuit Protection Type | OVERCURRENT ALL LOCATIONS |
| Body Width | 1.281 INCHES MAXIMUM IN |
| Pole Quantity | 2 |
| Mounting Surface to Terminal End Distance | 1.780 INCHES MAXIMUM IN |
| Maximum Continuous Load Current Rating Per Pole | 10.0 AMPERES AC AND 10.0 AMPERES DC ALL LOCATIONS |
| Trip Release Characteristic | TIME DELAY ALL LOCATIONS |
| Maximum Interrupting Capacity Current Type and Rating Per Pole in Amps | 300.0 AC AND 500.0 DC ALL LOCATIONS |
| Nominal Thread Size | 0.375 INCHES IN |
| Body Length | 1.562 INCHES MAXIMUM IN |
| Trip Delay Time in Seconds Per Rated Continuous Current | 0.500 MINIMUM AT 200 PCT AND 20.000 MAXIMUM AT 200 PCT ALL LOCATIONS |
| Manual Actuator Type and Quantity | 1 TOGGLE |
| Switch Current Rating and Type in Amps | 0.5 AC AND 0.5 DC |
| Switch Contact Arrangement | SINGLE POLE, DOUBLE THROW |
| Actuator Function | TRIP-RESET |
| Terminal Type and Quantity | 4 WIRE HOOK |
| Main Contact Tripping Mechanism Type | TRIP FREE |
| Thread Series Designator | UNEF |
| 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 |
|---|---|
| 87057-038 PRIMARY | Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (drawings) (USA) |
| Reference | Meaning |
|---|---|
| HM2-224-038 | 5/9 Secondary reference Eaton Corp Heinemann Products Commercial Controls Div |
| 87057 | D/9 Drawing number reference only Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (drawings) |
| 87057-038 | C/1 Advisory reference — outside the item-of-supply concept Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (vendor Item Drawings) |
| AP12-R-87057-038 | 5/2 Secondary reference U.S. Government activity |
NSN 5925-01-396-1124 is a Circuit Breaker, manufactured by Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (drawings), classified under FSC 5925, Circuit Breakers. Status: active.
NSN 5925-01-396-1124 has 1 manufacturer part number on file: 87057-038 (Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (drawings)).
2 possible matches (shared part number, not a government interchangeability claim): 5925-01-438-7647, 5925-01-549-5803. Verify interchangeability with system specifications before substitution.
Key specifications for 87057-038: Bushing Length: 0.380 INCHES MAXIMUM IN; Reset Method: MANUAL; Internal Trip Release Configuration: SERIES TRIP ALL LOCATIONS; Operating Voltage Type and Rating Per Pole in Volts: 240.0 AC AND 50.0 DC ALL LOCATIONS. 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.