The Circuit Breaker, cataloged under National Stock Number 5925-01-309-8581, is classified within Federal Supply Class 5925 (Circuit Breakers) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Honeywell Intl Inc Defense Avionics Systems Former Test Systems 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5925-01-309-8581 |
| Primary Part Number | 2131850-29 |
| Item Name | Circuit Breaker |
| FSC / FSG | 5925 / 59 — Circuit Breakers |
| Manufacturer | Honeywell Intl Inc Defense Avionics Systems Former Test Systems Div |
| 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 | 50.0 DC SECOND LOCATION |
| Operating Voltage Type and Rating Per Pole in Volts | 115.0 AC FIRST LOCATION |
| Operating Voltage Type and Rating Per Pole in Volts | 50.0 DC THIRD LOCATION |
| Mounting Facility Type and Quantity | 1 THREADED BUSHING WITH PANEL SEAL |
| Actuator Position Designation | AT POLE TWO |
| Frequency in Hertz | 50.0 OR 60.0 FIRST LOCATION |
| Unpackaged Unit Weight | 5.400 OUNCES NOMINAL OZ |
| Center to Center Distance Between Terminals Parallel to Width | 0.625 INCHES NOMINAL IN |
| Nonturn Device Radius | 0.620 INCHES MINIMUM AND 0.630 INCHES MAXIMUM IN |
| Fragility Factor | MODERATELY RUGGED |
| Body Style | MULTIPOLE-SINGLE ACTUATOR TYPE |
| Ultimate Trip Rating of Continuous Current Rating Per Pole in Percent | 125.0 ALL LOCATIONS |
| Arc Quenching Method | MAGNETIC BLOWOUT |
| Nonturn Device Length | 0.135 INCHES MINIMUM AND 0.145 INCHES MAXIMUM IN |
| Circuit Protection Type | OVERCURRENT ALL LOCATIONS |
| Body Width | 1.875 INCHES MAXIMUM IN |
| Storage Type | GENERAL PURPOSE WAREHOUSE |
| Pole Quantity | 3 |
| Mounting Surface to Terminal End Distance | 1.780 INCHES MAXIMUM IN |
| Maximum Continuous Load Current Rating Per Pole | 15.0 AMPERES AC FIRST LOCATION |
| Maximum Continuous Load Current Rating Per Pole | 10.0 AMPERES DC SECOND LOCATION |
| Maximum Continuous Load Current Rating Per Pole | 15.0 AMPERES DC THIRD LOCATION |
| Trip Release Characteristic | TIME DELAY ALL LOCATIONS |
| Maximum Interrupting Capacity Current Type and Rating Per Pole in Amps | 500.0 DC SECOND LOCATION |
| Maximum Interrupting Capacity Current Type and Rating Per Pole in Amps | 300.0 AC FIRST LOCATION |
| Maximum Interrupting Capacity Current Type and Rating Per Pole in Amps | 500.0 DC THIRD LOCATION |
| Nominal Thread Size | 0.375 INCHES 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 |
|---|---|
| 2131850-29 PRIMARY | Honeywell Intl Inc Defense Avionics Systems Former Test Systems Div (USA) |
| Reference | Meaning |
|---|---|
| AP112-1918-29 | 5/2 Secondary reference U.S. Government activity |
NSN 5925-01-309-8581 is a Circuit Breaker, manufactured by Honeywell Intl Inc Defense Avionics Systems Former Test Systems Div, classified under FSC 5925, Circuit Breakers. Status: active.
NSN 5925-01-309-8581 has 1 manufacturer part number on file: 2131850-29 (Honeywell Intl Inc Defense Avionics Systems Former Test Systems Div).
Key specifications for 2131850-29: 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: 50.0 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.