The Relay,electromagnetic, cataloged under National Stock Number 5945-01-583-9825, 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 Automation Products 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5945-01-583-9825 |
| Primary Part Number | 3RT2037-1AC20 |
| Item Name | Relay,electromagnetic |
| FSC / FSG | 5945 / 59 — Relays and Solenoids |
| Manufacturer | Siemens Energy and Automation Inc Automation Products Div |
| Status | ACTIVE |
| Frequency in Hertz | 50.0 MINIMUM AND 60.0 MAXIMUM |
| 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 |
|---|---|
| 3RT2037-1AC20 PRIMARY | Siemens Energy and Automation Inc Automation Products Div (USA) |
| Reference | Meaning |
|---|---|
| 3RT1044-1AC20 | 5/9 Secondary reference Siemens Energy and Automation Inc Automation Products Div |
NSN 5945-01-583-9825 is a Relay,electromagnetic, manufactured by Siemens Energy and Automation Inc Automation Products Div, classified under FSC 5945, Relays and Solenoids. Status: active.
NSN 5945-01-583-9825 has 1 manufacturer part number on file: 3RT2037-1AC20 (Siemens Energy and Automation Inc Automation Products Div).
Key specifications for 3RT2037-1AC20: Frequency in Hertz: 50.0 MINIMUM AND 60.0 MAXIMUM; Special Features: AC-3,30.0 KW,400.0VAC,24.0V,50/60 HZ,3-POLE,SIZE:S3,SCREW CONNECTION VAC; End Item Identification: 6115-01-572-3944 POWER PLANT,UTILITY. 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.