The Circuit Breaker, cataloged under National Stock Number 5925-01-247-9386, is classified within Federal Supply Class 5925 (Circuit Breakers) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Emerson Electric Co Computer Power Div. Government technical data includes 30 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5925-01-247-9386 |
| Primary Part Number | 12-771000-47 |
| Item Name | Circuit Breaker |
| FSC / FSG | 5925 / 59 — Circuit Breakers |
| Manufacturer | Emerson Electric Co Computer Power Div |
| Status | ACTIVE |
| Reset Method | MANUAL |
| Operating Voltage Type and Rating Per Pole in Volts | 600.0 AC ALL LOCATIONS |
| Mounting Facility Type and Quantity | 4 UNTHREADED HOLE(S)4 UNTHREADED HOLE(S) |
| Actuator Position Designation | AT POLE TWO |
| Frequency in Hertz | 60.0 ALL LOCATIONS |
| Center to Center Distance Between Terminals Parallel to Width | 2.750 INCHES NOMINAL2.750 INCHES NOMINAL IN |
| Fragility Factor | MODERATELY RUGGEDMODERATELY RUGGED |
| Body Style | MULTIPOLE-SINGLE ACTUATOR TYPEMULTIPOLE-SINGLE ACTUATOR TYPE |
| Ultimate Trip Rating of Continuous Current Rating Per Pole in Percent | 130.0 ALL LOCATIONS |
| Distance Between Centerlines of Mounting Facilities Parallel to Body Length | 14.250 INCHES NOMINAL14.250 INCHES NOMINAL IN |
| Arc Quenching Method | AIRAIR |
| Circuit Protection Type | UNDERVOLTAGE ALL LOCATIONS |
| Body Width | 8.250 INCHES NOMINAL8.250 INCHES NOMINAL IN |
| Body Height | 5.500 INCHES NOMINAL5.500 INCHES NOMINAL IN |
| Storage Type | GENERAL PURPOSE WAREHOUSEGENERAL PURPOSE WAREHOUSE |
| Unthreaded Mounting Hole Diameter | 0.390 INCHES NOMINAL0.390 INCHES NOMINAL IN |
| Pole Quantity | 33 |
| Maximum Continuous Load Current Rating Per Pole | 1200.0 AMPERES AC ALL LOCATIONS |
| Trip Release Characteristic | INSTANTANEOUS ALL LOCATIONS |
| Maximum Interrupting Capacity Current Type and Rating Per Pole in Amps | 1200.0 AC ALL LOCATIONS |
| Body Length | 12.750 INCHES NOMINAL12.750 INCHES NOMINAL IN |
| Manual Actuator Type and Quantity | 1 TOGGLE |
| Distance Between Centerlines of Mounting Facilities Parallel to Body Width | 1.375 INCHES NOMINAL1.375 INCHES NOMINAL IN |
| Inclosure Protection Type for Which Designed | GENERAL PURPOSE |
| Cubic Measure | 465.093 CUBIC INCHES465.093 CUBIC INCHES |
| Material | PLASTIC CASE |
| Actuator Function | TRIP-RESET |
| Trip Release Ambient Temp Rating | 35.0 CELSIUS NOMINAL ALL LOCATIONS DEGC |
| Terminal Type and Quantity | 6 SCREW |
| Main Contact Tripping Mechanism Type | TRIP FREE |
| 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 |
|---|---|
| 12-771000-47 PRIMARY | Emerson Electric Co Computer Power Div (USA) |
| TKMA31200WL | General Electric Co Electrical Distribution and Control (USA) |
| Reference | Meaning |
|---|---|
| TKMA31200 | C/1 Advisory reference — outside the item-of-supply concept General Electric Co Electrical Distribution and Control |
| 12-771342-47 | C/1 Advisory reference — outside the item-of-supply concept Emerson Electric Co Computer Power Div |
NSN 5925-01-247-9386 is a Circuit Breaker, manufactured by Emerson Electric Co Computer Power Div, classified under FSC 5925, Circuit Breakers. Status: active.
NSN 5925-01-247-9386 has 2 manufacturer part numbers on file: 12-771000-47 (Emerson Electric Co Computer Power Div), TKMA31200WL (General Electric Co Electrical Distribution and Control).
Key specifications for 12-771000-47: Reset Method: MANUAL; Operating Voltage Type and Rating Per Pole in Volts: 600.0 AC ALL LOCATIONS; Mounting Facility Type and Quantity: 4 UNTHREADED HOLE(S)4 UNTHREADED HOLE(S); Actuator Position Designation: AT POLE TWO. 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.