The Relay,electromagnetic, cataloged under National Stock Number 5945-01-293-2405, 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 & Automation, Inc. Div Siemens Ind Services, Siemens Sales Division. Government technical data includes 12 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5945-01-293-2405 |
| Primary Part Number | 3RT2045-1AN20 |
| Item Name | Relay,electromagnetic |
| FSC / FSG | 5945 / 59 — Relays and Solenoids |
| Manufacturer | Siemens Energy & Automation, Inc. Div Siemens Ind Services, Siemens Sales Division |
| Status | ACTIVE |
| Fragility Factor | MODERATELY RUGGED |
| Main Contact Load Current Rating at Maximum Rated Voltage | 34.0 AMPERES AC RESISTIVE LOAD |
| Duty Type | CONTINUOUS |
| Storage Type | GENERAL PURPOSE WAREHOUSE |
| Frequency in Hertz | 50.0 NOMINAL OR 60.0 NOMINAL |
| Auxiliary Contact Load Current Rating at Maximum Rated Voltage | 10.0 AMPERES AC RESISTIVE LOAD |
| Coil Quantity | 1 |
| Environmental Protection | DUSTPROOF |
| Winding Quantity | 1 |
| Nonpile-Up Main Contact Arrangement | 2 POLE, SINGLE THROW, NORMALLY OPEN, MOMENTARY ACTION AND 2 POLE, SINGLE THROW, NORMALLY CLOSED, MOMENTARY ACTION |
| Auxiliary Contact Maximum Voltage Rating in Volts | 660.0 AC AND 600.0 DC |
| Purpose for Which Designed | GENERAL |
| 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 |
|---|---|
| 3RT2045-1AN20 PRIMARY | Siemens Energy & Automation, Inc. Div Siemens Ind Services, Siemens Sales Division (USA) |
| Reference | Meaning |
|---|---|
| 03-121709/1-2-C1 | C/1 Advisory reference — outside the item-of-supply concept Tts Marine Gmbh |
| 3TB4817-0ANI | C/1 Advisory reference — outside the item-of-supply concept Siemens Energy & Automation, Inc. Div Siemens Ind Services, Siemens Sales Division |
| 3TB4817-0AN1 | 5/9 Secondary reference Siemens Energy & Automation, Inc. Div Siemens Ind Services, Siemens Sales Division |
NSN 5945-01-293-2405 is a Relay,electromagnetic, manufactured by Siemens Energy & Automation, Inc. Div Siemens Ind Services, Siemens Sales Division, classified under FSC 5945, Relays and Solenoids. Status: active.
NSN 5945-01-293-2405 has 1 manufacturer part number on file: 3RT2045-1AN20 (Siemens Energy & Automation, Inc. Div Siemens Ind Services, Siemens Sales Division).
Key specifications for 3RT2045-1AN20: Fragility Factor: MODERATELY RUGGED; Main Contact Load Current Rating at Maximum Rated Voltage: 34.0 AMPERES AC RESISTIVE LOAD; Duty Type: CONTINUOUS; Storage Type: GENERAL PURPOSE WAREHOUSE. 12 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.