The Relay,thermal, cataloged under National Stock Number 5945-01-274-8945, 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 1 specification, 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5945-01-274-8945 |
| Primary Part Number | 48GC37AA4 |
| Item Name | Relay,thermal |
| FSC / FSG | 5945 / 59 — Relays and Solenoids |
| Manufacturer | Siemens Energy and Automation Inc Siemens Furnas Controls Div |
| Status | ACTIVE |
| Mounting Facility Type and Quantity | 2 UNTHREADED HOLE(S) |
| 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 |
|---|---|
| 48GC37AA4 | Siemens Energy and Automation Inc Siemens Furnas Controls Div (USA) |
| Reference | Meaning |
|---|---|
| DN820K179 | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| DN820K179 | C/1 Advisory reference — outside the item-of-supply concept Yale Industrial Products, Inc. Div Duff Norton Company |
| 820K179 | 3/9 Design control — primary reference U.S. Government activity |
NSN 5945-01-274-8945 is a Relay,thermal, manufactured by Siemens Energy and Automation Inc Siemens Furnas Controls Div, classified under FSC 5945, Relays and Solenoids. Status: active.
NSN 5945-01-274-8945 has 1 manufacturer part number on file: 48GC37AA4 (Siemens Energy and Automation Inc Siemens Furnas Controls Div).
Key specifications for 48GC37AA4: Mounting Facility Type and Quantity: 2 UNTHREADED HOLE(S); Overall Height: 3.375 INCHES NOMINAL IN; Overall Length: 3.313 INCHES NOMINAL IN; Overall Width: 1.000 INCHES NOMINAL IN. 1 specification is 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.