The Circuit Breaker, cataloged under National Stock Number 5925-00-984-9125, 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 The Boeing Company. Government technical data includes 27 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5925-00-984-9125 |
| Primary Part Number | 27-10639-1 |
| Item Name | Circuit Breaker |
| FSC / FSG | 5925 / 59 — No Item Name Available |
| Manufacturer | The Boeing Company |
| Status | ACTIVE |
| Main Contact Tripping Mechanism Type | TRIP FREE |
| Maximum Continuous Load Current Rating Per Pole | 4.0 AMPERES DC SINGLE LOCATION |
| Trip Delay Time in Seconds Per Rated Continuous Current | 0.100 MINIMUM AT 200 PCT AND 0.800 MAXIMUM AT 200 PCT SINGLE LOCATION |
| Internal Trip Release Configuration | SERIES TRIP SINGLE LOCATION |
| Thread Series Designator | UNEF |
| Reset Method | MANUAL |
| Trip Release Characteristic | TIME DELAY SINGLE LOCATION |
| Terminal Type and Quantity | 2 WIRE HOOK |
| Actuator Function | TRIP-RESET |
| Nominal Thread Size | 0.375 INCHES IN |
| Manual Actuator Type and Quantity | 1 TOGGLE |
| Maximum Interrupting Capacity Current Type and Rating Per Pole in Amps | 750.0 DC SINGLE LOCATION |
| Trip Release Method | MAGNETIC SINGLE LOCATION |
| Circuit Protection Type | OVERCURRENT SINGLE LOCATION |
| Inclosure Protection Type for Which Designed | EXPLOSION RESISTANT AND FUNGUS RESISTANT AND HERMETICALLY SEALED |
| Operating Voltage Type and Rating Per Pole in Volts | 28.0 DC SINGLE LOCATION |
| Actuator Position Designation | AT POLE ONE |
| Ultimate Trip Rating of Continuous Current Rating Per Pole in Percent | 125.0 SINGLE LOCATION |
| Mounting Facility Type and Quantity | 1 THREADED BUSHING WITH PANEL SEAL |
| Thread Quantity Per Inch | 32 |
| Mounting Surface to Terminal End Distance | 1.574 INCHES NOMINAL IN |
| Center to Center Distance Between Terminals Parallel to Length | 0.875 INCHES NOMINAL IN |
| Pole Quantity | 1 |
| Body Style | SINGLE POLE TYPE |
| Bushing Length | 0.375 INCHES NOMINAL IN |
| Body Width | 0.625 INCHES NOMINAL IN |
| Body Length | 1.500 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 8983030-2 | Lockheed Martin Corporation Dba Lockheed Martin Div Lockheed Martin (USA) |
| 27-10639-1 PRIMARY | The Boeing Company (USA) |
| 27-10639 | The Boeing Company (USA) |
| 990-001-10 | Safran Power Usa, Llc (USA) |
| 990-001 | Safran Power Usa, Llc (USA) |
NSN 5925-00-984-9125 is a Circuit Breaker, manufactured by The Boeing Company, classified under FSC 5925 (No Item Name Available). Status: active.
NSN 5925-00-984-9125 has 5 cross-referenced part numbers: 8983030-2 (Lockheed Martin Corporation Dba Lockheed Martin Div Lockheed Martin), 27-10639-1 (The Boeing Company), 27-10639 (The Boeing Company), 990-001-10 (Safran Power Usa, Llc), 990-001 (Safran Power Usa, Llc).
There are 3 known substitutes for 5925-00-984-9125: 4730-00-630-0310, 7540-01-458-2541, 6830-01-667-5087. Verify interchangeability with system specifications before substitution.
Key specifications for 27-10639-1: Main Contact Tripping Mechanism Type: TRIP FREE; Maximum Continuous Load Current Rating Per Pole: 4.0 AMPERES DC SINGLE LOCATION; Trip Delay Time in Seconds Per Rated Continuous Current: 0.100 MINIMUM AT 200 PCT AND 0.800 MAXIMUM AT 200 PCT SINGLE LOCATION; Internal Trip Release Configuration: SERIES TRIP SINGLE LOCATION. 27 total characteristics are documented in the Federal Logistics Information System.