The Relay Assembly, cataloged under National Stock Number 5945-01-538-1453, is classified within Federal Supply Class 5945 (Relays and Solenoids) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Siemens Energy and Automation Inc Siemens Furnas Controls Div. Government technical data includes 2 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5945-01-538-1453 |
| Primary Part Number | 3UB8133-4GW2 |
| Item Name | Relay Assembly |
| FSC / FSG | 5945 / 59 — Relays and Solenoids |
| Manufacturer | Siemens Energy and Automation Inc Siemens Furnas Controls Div |
| Status | ACTIVE |
| Individual Relay Quantity | 3 |
| Relay Type | CONTACTOR |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 230-5072-220 | Continental Electronics Corp (USA) |
| 3UB8133-4GW2 PRIMARY | Siemens Energy and Automation Inc Siemens Furnas Controls Div (USA) |
| Reference | Meaning |
|---|---|
| 48BSK3M20 | 5/9 Secondary reference Siemens Energy and Automation Inc Siemens Furnas Controls Div |
NSN 5945-01-538-1453 is a Relay Assembly, manufactured by Siemens Energy and Automation Inc Siemens Furnas Controls Div, classified under FSC 5945, Relays and Solenoids. Status: active.
NSN 5945-01-538-1453 has 2 manufacturer part numbers on file: 230-5072-220 (Continental Electronics Corp), 3UB8133-4GW2 (Siemens Energy and Automation Inc Siemens Furnas Controls Div).
1 possible match (shared part number, not a government interchangeability claim): 5945-01-714-0037. Verify interchangeability with system specifications before substitution.
Key specifications for 3UB8133-4GW2: Overall Length: 4.500 INCHES NOMINAL IN; Overall Width: 2.330 INCHES NOMINAL IN; Individual Relay Quantity: 3; Relay Type: CONTACTOR. 2 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). 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.