The Relay,electromagnetic, cataloged under National Stock Number 5945-01-299-6288, 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 18 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5945-01-299-6288 |
| Primary Part Number | 3TB4210-0AR1 |
| 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 |
| Mounting Facility Type and Quantity | 2 UNTHREADED HOLE(S) SINGLE MOUNTING FACILITY |
| Main Contact Maximum Voltage Rating in Volts | 380.0 AC |
| Fragility Factor | MODERATELY RUGGED |
| Mounting Facility Pattern | DIAGONAL SINGLE MOUNTING FACILITY |
| Center to Center Distance Between Mounting Facilities Parallel to Length | 75.0 MILLIMETERS NOMINAL SINGLE MOUNTING FACILITY MM |
| Main Contact Load Current Rating at Maximum Rated Voltage | 16.0 AMPERES AC RESISTIVE LOAD |
| Duty Type | CONTINUOUS |
| Storage Type | GENERAL PURPOSE WAREHOUSE |
| Unthreaded Mounting Hole Diameter | 4.8 MILLIMETERS NOMINAL SINGLE MOUNTING FACILITY MM |
| Frequency in Hertz | 50.0 MINIMUM AND 60.0 MAXIMUM |
| Coil Quantity | 1 |
| Environmental Protection | DUSTPROOF |
| Winding Quantity | 1 |
| Operating Voltage Rating and Type at Specified Temp | 440.0 VOLTS AC 25 DEG CELSIUS SINGLE WINDING |
| Center to Center Distance Between Mounting Facilities Parallel to Width | 35.0 MILLIMETERS NOMINAL SINGLE MOUNTING FACILITY MM |
| Terminal Type and Quantity | 16 SCREW ALL FUNCTIONS |
| Nonpile-Up Main Contact Arrangement | 1 POLE, SINGLE THROW, NORMALLY OPEN, MOMENTARY ACTION |
| 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 |
|---|---|
| 3TB4210-0AR1 PRIMARY | Siemens Energy & Automation, Inc. Div Siemens Ind Services, Siemens Sales Division (USA) |
| 3TB4210-0AR1 | Siemens Energy Global Gmbh & Co. Kg Se Gp I So Cs Ma (DEU) |
NSN 5945-01-299-6288 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 5945-01-299-6288 has 2 manufacturer part numbers on file: 3TB4210-0AR1 (Siemens Energy & Automation, Inc. Div Siemens Ind Services, Siemens Sales Division), 3TB4210-0AR1 (Siemens Energy Global Gmbh & Co. Kg Se Gp I So Cs Ma).
Key specifications for 3TB4210-0AR1: Mounting Facility Type and Quantity: 2 UNTHREADED HOLE(S) SINGLE MOUNTING FACILITY; Overall Height: 107.0 MILLIMETERS NOMINAL MM; Main Contact Maximum Voltage Rating in Volts: 380.0 AC; Fragility Factor: MODERATELY RUGGED. 18 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.