The Relay,electromagnetic, cataloged under National Stock Number 5945-00-866-4121, is classified within Federal Supply Class 5945 (Relays and Solenoids) of the Electrical and Electronic Equipment Components group. Government technical data includes 15 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5945-00-866-4121 |
| Item Name | Relay,electromagnetic |
| FSC / FSG | 5945 / 59 — Relays and Solenoids |
| Status | ACTIVE |
| Mounting Facility Type and Quantity | 1 PLUG-IN TERMINAL(S) SINGLE MOUNTING FACILITY |
| Main Contact Maximum Voltage Rating in Volts | 250.0 AC |
| Precious Material | SILVER |
| Main Contact Load Current Rating at Maximum Rated Voltage | 10.0 AMPERES AC RESISTIVE LOAD |
| Duty Type | CONTINUOUS |
| Winding DC Resistance Rating | 2.0 KILOHMS NOMINAL SINGLE WINDING |
| Time Delay | 0.01 SECONDS NOMINAL FIXED OPERATE TIME |
| Coil Quantity | 1 |
| Surface Treatment | CADMIUM CONTACT |
| Precious Material and Location | CONTACTS SILVER |
| Winding Quantity | 1 |
| Operating Voltage Rating and Type at Specified Temp | 90.0 VOLTS DC 25 DEG CELSIUS SINGLE WINDING |
| Material | SILVER CONTACT |
| Terminal Type and Quantity | 1 STANDARD TUBE BASE ALL FUNCTIONS |
| Nonpile-Up Main Contact Arrangement | 3 POLE, DOUBLE THROW, ONE POSITION MOMENTARY |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 140-0040 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5945-00-866-4121 is a Relay,electromagnetic, classified under FSC 5945, Relays and Solenoids. Status: active.
2 possible matches (shared part number, not a government interchangeability claim): 5945-00-900-1889, 3110-01-397-1590. Verify interchangeability with system specifications before substitution.
Key specifications for 5945-00-866-4121: Mounting Facility Type and Quantity: 1 PLUG-IN TERMINAL(S) SINGLE MOUNTING FACILITY; Main Contact Maximum Voltage Rating in Volts: 250.0 AC; Precious Material: SILVER; Main Contact Load Current Rating at Maximum Rated Voltage: 10.0 AMPERES AC RESISTIVE LOAD. 15 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.