The Circuit Breaker, cataloged under National Stock Number 5925-01-661-4971, is classified within Federal Supply Class 5925 (Circuit Breakers) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Siemens Energy & Automation, Inc. Div Siemens Ind Services, Siemens Sales Division. Government technical data includes 6 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5925-01-661-4971 |
| Primary Part Number | NGB3B030B |
| Item Name | Circuit Breaker |
| FSC / FSG | 5925 / 59 — Circuit Breakers |
| Manufacturer | Siemens Energy & Automation, Inc. Div Siemens Ind Services, Siemens Sales Division |
| Status | ACTIVE |
| Operating Voltage Type and Rating Per Pole in Volts | 600.0 AC SINGLE LOCATION |
| Unpackaged Unit Weight | 4.0 POUNDS NOMINAL LBS |
| Body Style | MULTIPOLE-SINGLE ACTUATOR TYPE |
| Pole Quantity | 3 |
| Maximum Continuous Load Current Rating Per Pole | 30.0 AMPERES AC SINGLE LOCATION |
| Trip Release Method | THERMAL-MAGNETIC SINGLE LOCATION |
| 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 |
|---|---|
| NGB3B030B PRIMARY | Siemens Energy & Automation, Inc. Div Siemens Ind Services, Siemens Sales Division (USA) |
NSN 5925-01-661-4971 is a Circuit Breaker, manufactured by Siemens Energy & Automation, Inc. Div Siemens Ind Services, Siemens Sales Division, classified under FSC 5925, Circuit Breakers. Status: active.
NSN 5925-01-661-4971 has 1 manufacturer part number on file: NGB3B030B (Siemens Energy & Automation, Inc. Div Siemens Ind Services, Siemens Sales Division).
Key specifications for NGB3B030B: Operating Voltage Type and Rating Per Pole in Volts: 600.0 AC SINGLE LOCATION; Overall Height: 4.5 INCHES NOMINAL IN; Unpackaged Unit Weight: 4.0 POUNDS NOMINAL LBS; Body Style: MULTIPOLE-SINGLE ACTUATOR TYPE. 6 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.