The Relay,electromagnetic, cataloged under National Stock Number 5945-01-177-2288, is classified within Federal Supply Class 5945 (Relays and Solenoids) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Naval Sea Systems Command. Government technical data includes 20 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. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5945-01-177-2288 |
| Primary Part Number | 301-5556873 PIECE 18 |
| Item Name | Relay,electromagnetic |
| FSC / FSG | 5945 / 59 — Relays and Solenoids |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Mounting Facility Type and Quantity | 2 UNTHREADED HOLE(S) SINGLE MOUNTING FACILITY |
| Main Contact Maximum Voltage Rating in Volts | 440.0 AC AND 230.0 DC |
| Fragility Factor | MODERATELY RUGGED |
| Mounting Facility Pattern | DIAGONAL SINGLE MOUNTING FACILITY |
| Arc Quenching Method | AIR |
| Center to Center Distance Between Mounting Facilities Parallel to Length | 5.438 INCHES NOMINAL SINGLE MOUNTING FACILITY IN |
| Main Contact Load Current Rating at Maximum Rated Voltage | 30.0 AMPERES AC AND 30.0 AMPERES DC RESISTIVE LOAD |
| Duty Type | CONTINUOUS |
| Storage Type | GENERAL PURPOSE WAREHOUSE |
| Unthreaded Mounting Hole Diameter | 0.173 INCHES NOMINAL SINGLE MOUNTING FACILITY IN |
| Frequency in Hertz | 60.0 NOMINAL |
| Coil Quantity | 1 |
| Environmental Protection | HERMETIC |
| Cubic Measure | 78.843 CUBIC INCHES |
| 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 | 3.125 INCHES NOMINAL SINGLE MOUNTING FACILITY IN |
| Terminal Type and Quantity | 14 SCREW ALL FUNCTIONS |
| Nonpile-Up Main Contact Arrangement | 4 POLE, DOUBLE THROW, ONE POSITION MOMENTARY |
| 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 |
|---|---|
| 301-5556873 PIECE 18 PRIMARY | Naval Sea Systems Command (USA) |
| 130-8542 | Ward Leonard Ct Llc (USA) |
NSN 5945-01-177-2288 is a Relay,electromagnetic, manufactured by Naval Sea Systems Command, classified under FSC 5945, Relays and Solenoids. Status: active.
NSN 5945-01-177-2288 has 2 manufacturer part numbers on file: 301-5556873 PIECE 18 (Naval Sea Systems Command), 130-8542 (Ward Leonard Ct Llc).
1 possible match (shared part number, not a government interchangeability claim): 5895-01-603-8194. Verify interchangeability with system specifications before substitution.
Key specifications for 301-5556873 PIECE 18: Mounting Facility Type and Quantity: 2 UNTHREADED HOLE(S) SINGLE MOUNTING FACILITY; Overall Height: 3.625 INCHES MAXIMUM IN; Main Contact Maximum Voltage Rating in Volts: 440.0 AC AND 230.0 DC; Fragility Factor: MODERATELY RUGGED. 20 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.