The Circuit Breaker, cataloged under National Stock Number 5925-01-157-4604, is classified within Federal Supply Class 5925 (Circuit Breakers) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Caterpillar Inc Div Caterpillar Defense. Government technical data includes 26 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5925-01-157-4604 |
| Primary Part Number | 3R8920 |
| Item Name | Circuit Breaker |
| FSC / FSG | 5925 / 59 — Circuit Breakers |
| Manufacturer | Caterpillar Inc Div Caterpillar Defense |
| Status | ACTIVE |
| Reset Method | AUTOMATIC |
| Internal Trip Release Configuration | SERIES TRIP SINGLE LOCATION |
| Operating Voltage Type and Rating Per Pole in Volts | 110.0 AC AND 30.0 DC SINGLE LOCATION |
| Mounting Facility Type and Quantity | 2 THREADED HOLE(S) |
| Frequency in Hertz | 60.0 SINGLE LOCATION |
| Body Style | SINGLE POLE TYPE |
| Ultimate Trip Rating of Continuous Current Rating Per Pole in Percent | 130.0 SINGLE LOCATION |
| Distance Between Centerlines of Mounting Facilities Parallel to Body Length | 39.98 MILLIMETERS NOMINAL MM |
| Circuit Protection Type | OVERCURRENT SINGLE LOCATION |
| Body Width | 24.14 MILLIMETERS NOMINAL MM |
| Storage Type | GENERAL PURPOSE WAREHOUSE |
| Pole Quantity | 1 |
| Mounting Surface to Terminal End Distance | 32.5 MILLIMETERS NOMINAL MM |
| Maximum Continuous Load Current Rating Per Pole | 8.0 AMPERES AC AND 8.0 AMPERES DC SINGLE LOCATION |
| Trip Release Characteristic | TIME DELAY SINGLE LOCATION |
| Maximum Interrupting Capacity Current Type and Rating Per Pole in Amps | 600.0 AC AND 600.0 DC SINGLE LOCATION |
| Nominal Thread Size | 0.164 INCHES IN |
| Trip Delay Time in Seconds Per Rated Continuous Current | 5.500 MINIMUM AT 200 PCT AND 55.000 MAXIMUM AT 200 PCT SINGLE LOCATION |
| Inclosure Protection Type for Which Designed | GENERAL PURPOSE |
| Thread Quantity Per Inch | 32 |
| Material | PLASTIC CASE |
| Trip Release Ambient Temp Rating | 25.0 CELSIUS NOMINAL SINGLE LOCATION DEGC |
| Terminal Type and Quantity | 2 TAB W/SCREW |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Trip Release Method | THERMAL SINGLE LOCATION |
| Center to Center Distance Between Terminals Parallel to Length | 16.3 MILLIMETERS NOMINAL MM |
| 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 |
|---|---|
| 3R8920 PRIMARY | Caterpillar Inc Div Caterpillar Defense (USA) |
| Reference | Meaning |
|---|---|
| CDA 8I | 5/9 Secondary reference Texas Instruments Inc Control Products Div |
NSN 5925-01-157-4604 is a Circuit Breaker, manufactured by Caterpillar Inc Div Caterpillar Defense, classified under FSC 5925, Circuit Breakers. Status: active.
NSN 5925-01-157-4604 has 1 manufacturer part number on file: 3R8920 (Caterpillar Inc Div Caterpillar Defense).
Key specifications for 3R8920: Reset Method: AUTOMATIC; Internal Trip Release Configuration: SERIES TRIP SINGLE LOCATION; Operating Voltage Type and Rating Per Pole in Volts: 110.0 AC AND 30.0 DC SINGLE LOCATION; Mounting Facility Type and Quantity: 2 THREADED HOLE(S). 26 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.