The Circuit Breaker, cataloged under National Stock Number 5925-00-906-1963, 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 L3harris Technologies, Inc. Div Space and Airborne Systems. Government technical data includes 30 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.
| Parameter | Value |
|---|---|
| NSN | 5925-00-906-1963 |
| Primary Part Number | 50939 |
| Item Name | Circuit Breaker |
| FSC / FSG | 5925 / 59 — No Item Name Available |
| Manufacturer | L3harris Technologies, Inc. Div Space and Airborne Systems |
| Status | CANCELLED |
| Trip Release Method | MAGNETIC-HYDRAULIC ALL LOCATIONS |
| Manual Actuator Type and Quantity | 1 TOGGLE |
| Main Contact Tripping Mechanism Type | TRIP FREE |
| Thread Series Designator | UNEF |
| Inclosure Protection Type for Which Designed | DUSTPROOF |
| Actuator Function | TRIP-RESET |
| Trip Delay Time in Seconds Per Rated Continuous Current | 0.200 MINIMUM AT 200 PCT AND 8.000 MAXIMUM AT 200 PCT FIRST LOCATION |
| Operating Voltage Type and Rating Per Pole in Volts | 50.0 DC SECOND LOCATION |
| Actuator Position Designation | BETWEEN POLE ONE AND TWO |
| Trip Delay Time in Seconds Per Rated Continuous Current | 2.000 MINIMUM AT 200 PCT AND 20.000 MAXIMUM AT 200 PCT SECOND LOCATION |
| Maximum Continuous Load Current Rating Per Pole | 10.0 AMPERES AC FIRST LOCATION |
| Internal Trip Release Configuration | SERIES TRIP ALL LOCATIONS |
| Maximum Interrupting Capacity Current Type and Rating Per Pole in Amps | 500.0 DC SECOND LOCATION |
| Ultimate Trip Rating of Continuous Current Rating Per Pole in Percent | 125.0 ALL LOCATIONS |
| Maximum Interrupting Capacity Current Type and Rating Per Pole in Amps | 300.0 AC FIRST LOCATION |
| Nominal Thread Size | 0.375 INCHES IN |
| Operating Voltage Type and Rating Per Pole in Volts | 240.0 AC FIRST LOCATION |
| Maximum Continuous Load Current Rating Per Pole | 10.0 AMPERES DC SECOND LOCATION |
| Terminal Type and Quantity | 4 WIRE HOOK |
| Frequency in Hertz | 60.0 FIRST LOCATION |
| Circuit Protection Type | OVERCURRENT ALL LOCATIONS |
| Reset Method | MANUAL |
| Trip Release Characteristic | TIME DELAY ALL LOCATIONS |
| Storage Type | GENERAL PURPOSE WAREHOUSE |
| Center to Center Distance Between Terminals Parallel to Length | 0.875 INCHES NOMINAL IN |
| Arc Quenching Method | MAGNETIC BLOWOUT |
| Mounting Facility Type and Quantity | 1 THREADED BUSHING WITH PANEL SEAL |
| Center to Center Distance Between Terminals Parallel to Width | 0.625 INCHES NOMINAL IN |
| Fragility Factor | MODERATELY RUGGED |
| Pole Quantity | 2 |
| Acquisition Status | CANCELLED |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| HE2-A3B3L10-240-1-60HZ-R10-50DC2 | Eaton Corp Heinemann Products Commercial Controls Div (USA) |
| PSM33R10ADCL10AC | Eaton Corp Heinemann Products Commercial Controls Div (USA) |
| 50939 PRIMARY | L3harris Technologies, Inc. Div Space and Airborne Systems (USA) |
NSN 5925-00-906-1963 is a Circuit Breaker, manufactured by L3harris Technologies, Inc. Div Space and Airborne Systems, classified under FSC 5925 (No Item Name Available). Status: cancelled.
NSN 5925-00-906-1963 has 3 cross-referenced part numbers: HE2-A3B3L10-240-1-60HZ-R10-50DC2 (Eaton Corp Heinemann Products Commercial Controls Div), PSM33R10ADCL10AC (Eaton Corp Heinemann Products Commercial Controls Div), 50939 (L3harris Technologies, Inc. Div Space and Airborne Systems).
There are 3 known substitutes for 5925-00-906-1963: 5930-00-197-4770, 4940-01-117-9071, 5985-01-557-8115. Verify interchangeability with system specifications before substitution.
Key specifications for 50939: Trip Release Method: MAGNETIC-HYDRAULIC ALL LOCATIONS; Manual Actuator Type and Quantity: 1 TOGGLE; Main Contact Tripping Mechanism Type: TRIP FREE; Thread Series Designator: UNEF. 30 total characteristics are documented in the Federal Logistics Information System.
NSN 5925-00-906-1963 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.