The Circuit Breaker, cataloged under National Stock Number 5925-01-149-9299, is classified within Federal Supply Class 5925 (Circuit Breakers) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Eaton Corp Aerospace Commercial Controls Div. 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5925-01-149-9299 |
| Primary Part Number | AM2R-Z159-8 |
| Item Name | Circuit Breaker |
| FSC / FSG | 5925 / 59 — Circuit Breakers |
| Manufacturer | Eaton Corp Aerospace Commercial Controls Div |
| Status | ACTIVE |
| Reset Method | MANUAL |
| Internal Trip Release Configuration | SERIES TRIP ALL LOCATIONS |
| Operating Voltage Type and Rating Per Pole in Volts | 65.0 DC FIRST LOCATION |
| Operating Voltage Type and Rating Per Pole in Volts | 35.0 DC SECOND LOCATION |
| Mounting Facility Type and Quantity | 4 THREADED HOLE(S) |
| Actuator Position Designation | AT EACH POLE |
| Unpackaged Unit Weight | 6.438 POUNDS NOMINAL LBS |
| Center to Center Distance Between Terminals Parallel to Width | 0.740 INCHES MINIMUM AND 0.760 INCHES MAXIMUM 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 AND TWO LINKED |
| Distance Between Centerlines of Mounting Facilities Parallel to Body Length | 2.052 INCHES MINIMUM AND 2.072 INCHES MAXIMUM IN |
| Arc Quenching Method | MAGNETIC BLOWOUT |
| Circuit Protection Type | OVERCURRENT ALL LOCATIONS |
| Body Width | 1.480 INCHES MINIMUM AND 1.520 INCHES MAXIMUM IN |
| Storage Type | GENERAL PURPOSE WAREHOUSE |
| Pole Quantity | 2 |
| Mounting Surface to Terminal End Distance | 3.590 INCHES MAXIMUM IN |
| Thread Pitch Diameters | +0.1177 TO 0.1214 INCHES IN |
| Maximum Continuous Load Current Rating Per Pole | 50.0 AMPERES DC FIRST LOCATION |
| Features Provided | HIGH INRUSH PROTECTION |
| Trip Release Characteristic | INSTANTANEOUS SECOND LOCATION |
| Trip Release Characteristic | TIME DELAY FIRST LOCATION |
| Maximum Interrupting Capacity Current Type and Rating Per Pole in Amps | 1000.0 DC ALL LOCATIONS |
| Nominal Thread Size | 0.138 INCHES IN |
| Body Length | 2.480 INCHES MINIMUM AND 2.520 INCHES MAXIMUM IN |
| Trip Delay Time in Seconds Per Rated Continuous Current | 0.150 MINIMUM AT 200 PCT AND 1.500 MAXIMUM AT 200 PCT FIRST LOCATION |
| Manual Actuator Type and Quantity | 2 TOGGLE |
| Distance Between Centerlines of Mounting Facilities Parallel to Body Width | 0.740 INCHES MINIMUM AND 0.760 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 |
| Part Number | Manufacturer |
|---|---|
| AM2R-Z159-8 | Eaton Corp Aerospace Commercial Controls Div (USA) |
| Reference | Meaning |
|---|---|
| AM2-Z159-8 | 5/9 Secondary reference Eaton Corp Heinemann Products Commercial Controls Div |
| SM-A-838525-11 | 3/2 Design control — primary reference U.S. Government activity |
| APL11-4301-11 | 5/2 Secondary reference U.S. Government activity |
NSN 5925-01-149-9299 is a Circuit Breaker, manufactured by Eaton Corp Aerospace Commercial Controls Div, classified under FSC 5925, Circuit Breakers. Status: active.
NSN 5925-01-149-9299 has 1 manufacturer part number on file: AM2R-Z159-8 (Eaton Corp Aerospace Commercial Controls Div).
Key specifications for AM2R-Z159-8: Reset Method: MANUAL; Internal Trip Release Configuration: SERIES TRIP ALL LOCATIONS; Operating Voltage Type and Rating Per Pole in Volts: 65.0 DC FIRST LOCATION; Operating Voltage Type and Rating Per Pole in Volts: 35.0 DC SECOND LOCATION. 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.