The Relay,electromagnetic, cataloged under National Stock Number 5945-01-477-7641, is classified within Federal Supply Class 5945 (Relays and Solenoids) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Te Connectivity Corporation. Government technical data includes 2 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 5 items share a part number with this NSN in the catalog (possible match — not a government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 | 5945-01-477-7641 |
| Primary Part Number | MDR-4183 |
| Item Name | Relay,electromagnetic |
| FSC / FSG | 5945 / 59 — Relays and Solenoids |
| Manufacturer | Te Connectivity Corporation |
| Status | ACTIVE |
| Operating Voltage Rating and Type at Specified Temp | 115.0 VOLTS AC 25 DEG CELSIUS SINGLE WINDING |
| Nonpile-Up Main Contact Arrangement | 12 POLE, DOUBLE THROW, ONE POSITION MOMENTARY AND 2 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 |
| Part Number | Manufacturer |
|---|---|
| MDR-4183 PRIMARY | Te Connectivity Corporation (USA) |
| 749505PC28 | L3harris Maritime Power & Energy Solutions, Inc. Dba Spd Electrical Systems, Inc. (USA) |
| Reference | Meaning |
|---|---|
| 749505 | D/9 Drawing number reference only L3harris Maritime Power & Energy Solutions, Inc. Dba Spd Electrical Systems, Inc. |
NSN 5945-01-477-7641 is a Relay,electromagnetic, manufactured by Te Connectivity Corporation, classified under FSC 5945, Relays and Solenoids. Status: active.
NSN 5945-01-477-7641 has 2 manufacturer part numbers on file: MDR-4183 (Te Connectivity Corporation), 749505PC28 (L3harris Maritime Power & Energy Solutions, Inc. Dba Spd Electrical Systems, Inc.).
5 possible matches (shared part number, not a government interchangeability claim): 5945-01-477-7649, 5945-01-477-7657, 5905-01-477-7885. Verify interchangeability with system specifications before substitution.
Key specifications for MDR-4183: Special Features: AUXILIARY SMALL, NON-LATCHING TYPE MDR; Operating Voltage Rating and Type at Specified Temp: 115.0 VOLTS AC 25 DEG CELSIUS SINGLE WINDING; End Item Identification: SWBD 3H-5H NSSN DC POWER DISTRIBUTION SWITCHBOARDS, WSD: NUCLEAR REACTOR BOUNDRY AREA; Nonpile-Up Main Contact Arrangement: 12 POLE, DOUBLE THROW, ONE POSITION MOMENTARY AND 2 POLE, DOUBLE THROW, ONE POSITION MOMENTARY. 2 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.