The Circuit Breaker, cataloged under National Stock Number 5925-01-473-0646, is classified within Federal Supply Class 5925 (Circuit Breakers) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Snap Action Inc.. Government technical data includes 17 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5925-01-473-0646 |
| Primary Part Number | VB3-A20-F57 |
| Item Name | Circuit Breaker |
| FSC / FSG | 5925 / 59 — Circuit Breakers |
| Manufacturer | Snap Action Inc. |
| Status | ACTIVE |
| Reset Method | AUTOMATIC |
| Internal Trip Release Configuration | RELAY TRIP SINGLE LOCATION |
| Operating Voltage Type and Rating Per Pole in Volts | 36.0 DC ALL LOCATIONS |
| Mounting Facility Type and Quantity | 2 SLOT |
| Ultimate Trip Time Per Pole in Seconds | 15.000 NOMINAL ALL LOCATIONS |
| Body Style | RECTANGULAR DIMENSIONAL ENVELOPE |
| Ultimate Trip Rating of Continuous Current Rating Per Pole in Percent | 100.0 ALL LOCATIONS |
| Circuit Protection Type | OVERCURRENT ALL LOCATIONS |
| Pole Quantity | 2 |
| Maximum Continuous Load Current Rating Per Pole | 20.0 AMPERES DC ALL LOCATIONS |
| Trip Release Characteristic | INSTANTANEOUS SINGLE LOCATION |
| Maximum Interrupting Capacity Current Type and Rating Per Pole in Amps | 20.0 DC ALL LOCATIONS |
| Material | PLASTIC CASE |
| Trip Release Ambient Temp Rating | 40.0 CELSIUS NOMINAL SINGLE LOCATION DEGC |
| Terminal Type and Quantity | 2 BUS BAR |
| Trip Release Method | THERMAL SINGLE LOCATION |
| Mounting Slot Width | 0.210 INCHES NOMINAL IN |
| 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 |
|---|---|
| VB3-A20-F57 PRIMARY | Snap Action Inc. (USA) |
| Reference | Meaning |
|---|---|
| 3126509 | 5/9 Secondary reference Oshkosh Corp |
| 3126509 | 7/2 Vendor item drawing reference Oshkosh Defense Llc |
| 5925014730646 | 6/9 Informative reference only E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales |
| 5925PL1598684 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
NSN 5925-01-473-0646 is a Circuit Breaker, manufactured by Snap Action Inc., classified under FSC 5925, Circuit Breakers. Status: active.
NSN 5925-01-473-0646 has 1 manufacturer part number on file: VB3-A20-F57 (Snap Action Inc.).
Key specifications for VB3-A20-F57: Reset Method: AUTOMATIC; Internal Trip Release Configuration: RELAY TRIP SINGLE LOCATION; Operating Voltage Type and Rating Per Pole in Volts: 36.0 DC ALL LOCATIONS; Mounting Facility Type and Quantity: 2 SLOT. 17 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.