The Circuit Breaker, cataloged under National Stock Number 5925-00-881-9766, is classified within Federal Supply Class 5925 (No Item Name Available) of the Electrical and Electronic Equipment Components group. The primary manufacturer of record is Eaton Corp Heinemann Products Commercial Controls Div. Government technical data includes 28 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5925-00-881-9766 |
| Primary Part Number | 78-137-1 |
| Item Name | Circuit Breaker |
| FSC / FSG | 5925 / 59 — No Item Name Available |
| Manufacturer | Eaton Corp Heinemann Products Commercial Controls Div |
| Status | ACTIVE |
| Body Length | 1.531 INCHES NOMINAL IN |
| Manual Actuator Type and Quantity | 1 TOGGLE |
| Thread Series Designator | UNEF |
| Terminal Type and Quantity | 8 WIRE HOOK |
| Ultimate Trip Rating of Continuous Current Rating Per Pole in Percent | 120.0 ALL LOCATIONS |
| Maximum Interrupting Capacity Current Type and Rating Per Pole in Amps | 500.0 DC ALL LOCATIONS |
| Internal Trip Release Configuration | RELAY TRIP ALL LOCATIONS |
| Trip Release Characteristic | INSTANTANEOUS ALL LOCATIONS |
| Circuit Protection Type | OVERCURRENT ALL LOCATIONS |
| Reset Method | MANUAL |
| Trip Release Method | MAGNETIC ALL LOCATIONS |
| Maximum Continuous Load Current Rating Per Pole | 3.0 AMPERES DC SECOND LOCATION |
| Actuator Position Designation | AT POLE TWO |
| Nominal Thread Size | 0.375 INCHES IN |
| Maximum Continuous Load Current Rating Per Pole | 5.0 AMPERES DC FIRST LOCATION |
| Actuator Function | TRIP-RESET |
| Operating Voltage Type and Rating Per Pole in Volts | 50.0 DC ALL LOCATIONS |
| Main Contact Tripping Mechanism Type | TRIP FREE |
| Mounting Surface to Terminal End Distance | 1.797 INCHES NOMINAL IN |
| Pole Quantity | 2 |
| Center to Center Distance Between Terminals Parallel to Length | 0.437 INCHES NOMINAL IN |
| Center to Center Distance Between Terminals Parallel to Width | 0.625 INCHES NOMINAL IN |
| Thread Quantity Per Inch | 32 |
| Storage Type | GENERAL PURPOSE WAREHOUSE |
| Body Style | MULTIPOLE-SINGLE ACTUATOR TYPE |
| Mounting Facility Type and Quantity | 1 THREADED BUSHING WITH PANEL SEAL |
| Bushing Length | 0.310 INCHES NOMINAL IN |
| Body Width | 1.250 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
NSN 5925-00-881-9766 is a Circuit Breaker, manufactured by Eaton Corp Heinemann Products Commercial Controls Div, classified under FSC 5925 (No Item Name Available). Status: active.
NSN 5925-00-881-9766 has 2 cross-referenced part numbers: 78-137-1 (Eaton Corp Heinemann Products Commercial Controls Div), 3726 (Naval Electronic Systems Security Engineering Center).
There are 9 known substitutes for 5925-00-881-9766: 5950-00-127-9278, 5120-00-289-8212, 5998-00-519-0164 and 6 more. Verify interchangeability with system specifications before substitution.
Key specifications for 78-137-1: Body Length: 1.531 INCHES NOMINAL IN; Manual Actuator Type and Quantity: 1 TOGGLE; Thread Series Designator: UNEF; Terminal Type and Quantity: 8 WIRE HOOK. 28 total characteristics are documented in the Federal Logistics Information System.