The Circuit Breaker, cataloged under National Stock Number 5925-00-155-2587, is classified within Federal Supply Class 5925 (Circuit Breakers) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Heinemann Electric Canada Incdivision of Eaton Corp. 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through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5925-00-155-2587 |
| Primary Part Number | AM3R-A3A16-LC070A-16-1 |
| Item Name | Circuit Breaker |
| FSC / FSG | 5925 / 59 — Circuit Breakers |
| Manufacturer | Heinemann Electric Canada Incdivision of Eaton Corp |
| Status | ACTIVE |
| Reset Method | MANUAL |
| Internal Trip Release Configuration | SERIES TRIP ALL LOCATIONS |
| Operating Voltage Type and Rating Per Pole in Volts | 250.0 AC ALL LOCATIONS |
| Mounting Facility Type and Quantity | 6 THREADED HOLE(S) |
| Actuator Position Designation | AT EACH POLE |
| Frequency in Hertz | 400.0 ALL LOCATIONS |
| Unpackaged Unit Weight | 11.100 OUNCES NOMINAL OZ |
| Center to Center Distance Between Terminals Parallel to Width | 0.750 INCHES NOMINAL IN |
| Fragility Factor | MODERATELY RUGGED |
| Body Style | MULTIPOLE-MULTIPLE ACTUATOR TYPE |
| Ultimate Trip Rating of Continuous Current Rating Per Pole in Percent | 115.0 ALL LOCATIONS |
| External Actuator Linkage Arrangement | ONE, TWO, AND THREE LINKED |
| Distance Between Centerlines of Mounting Facilities Parallel to Body Length | 2.050 INCHES MINIMUM AND 2.070 INCHES MAXIMUM IN |
| Arc Quenching Method | MAGNETIC BLOWOUT |
| Circuit Protection Type | OVERCURRENT ALL LOCATIONS |
| Body Width | 2.250 INCHES MAXIMUM IN |
| Storage Type | GENERAL PURPOSE WAREHOUSE |
| Pole Quantity | 3 |
| Mounting Surface to Terminal End Distance | 2.475 INCHES NOMINAL IN |
| Thread Pitch Diameters | +0.1177 TO 0.1214 INCHES IN |
| Maximum Continuous Load Current Rating Per Pole | 18.0 AMPERES AC ALL LOCATIONS |
| Trip Release Characteristic | TIME DELAY ALL LOCATIONS |
| Maximum Interrupting Capacity Current Type and Rating Per Pole in Amps | 5000.0 AC ALL LOCATIONS |
| Nominal Thread Size | 0.138 INCHES IN |
| Body Length | 2.480 INCHES MINIMUM AND 2.500 INCHES MAXIMUM IN |
| Trip Delay Time in Seconds Per Rated Continuous Current | 2.000 MINIMUM AT 200 PCT AND 22.000 MAXIMUM AT 200 PCT ALL LOCATIONS |
| Manual Actuator Type and Quantity | 3 TOGGLE |
| Distance Between Centerlines of Mounting Facilities Parallel to Body Width | 0.750 INCHES NOMINAL IN |
| Inclosure Protection Type for Which Designed | FUNGUS RESISTANT AND MOISTURE RESISTANT AND SALT SPRAY PROOF AND SHOCK RESISTANT AND VIBRATION RESISTANT |
| Thread Quantity Per Inch | 32 |
| 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 |
|---|---|
| AM3R-A3A16-LC070A-16-1 | Heinemann Electric Canada Incdivision of Eaton Corp (CAN) |
| Reference | Meaning |
|---|---|
| 128C188H15 | 3/2 Design control — primary reference U.S. Government activity |
| APL-111-1A | 5/9 Secondary reference U.S. Government activity |
| APL-111-1-42-183-M | 5/2 Secondary reference U.S. Government activity |
| AM3A3A3A16 | C/1 Advisory reference — outside the item-of-supply concept Eaton Corp Heinemann Products Commercial Controls Div |
| AM333MG6-18-250VAC-15-400HZ | 5/9 Secondary reference Eaton Corp Heinemann Products Commercial Controls Div |
| AM333MG6 | 5/9 Secondary reference Eaton Corp Heinemann Products Commercial Controls Div |
NSN 5925-00-155-2587 is a Circuit Breaker, manufactured by Heinemann Electric Canada Incdivision of Eaton Corp, classified under FSC 5925, Circuit Breakers. Status: active.
NSN 5925-00-155-2587 has 1 manufacturer part number on file: AM3R-A3A16-LC070A-16-1 (Heinemann Electric Canada Incdivision of Eaton Corp).
1 possible match (shared part number, not a government interchangeability claim): 5925-01-056-7608. Verify interchangeability with system specifications before substitution.
Key specifications for AM3R-A3A16-LC070A-16-1: Reset Method: MANUAL; Internal Trip Release Configuration: SERIES TRIP ALL LOCATIONS; Operating Voltage Type and Rating Per Pole in Volts: 250.0 AC ALL LOCATIONS; Mounting Facility Type and Quantity: 6 THREADED HOLE(S). 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.