The Relay,electromagnetic, cataloged under National Stock Number 5945-00-052-4173, 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 15 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through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5945-00-052-4173 |
| Primary Part Number | 520M52 |
| Item Name | Relay,electromagnetic |
| FSC / FSG | 5945 / 59 — Relays and Solenoids |
| Manufacturer | Te Connectivity Corporation |
| Status | ACTIVE |
| Mounting Facility Type and Quantity | 2 UNTHREADED HOLE(S) SINGLE MOUNTING FACILITY |
| Pile-Up Main Contact Form Arrangement | 4C |
| Main Contact Maximum Voltage Rating in Volts | 115.0 AC AND 26.5 DC |
| Mounting Facility Pattern | IN-LINE SINGLE MOUNTING FACILITY |
| Center to Center Distance Between Mounting Facilities Parallel to Length | 1.562 INCHES NOMINAL SINGLE MOUNTING FACILITY IN |
| Main Contact Load Current Rating at Maximum Rated Voltage | 1.0 AMPERES AC AND 1.0 AMPERES DC INDUCTIVE LOAD |
| Duty Type | CONTINUOUS |
| Unthreaded Mounting Hole Diameter | 0.144 INCHES NOMINAL SINGLE MOUNTING FACILITY IN |
| Winding DC Resistance Rating | 9.5 KILOHMS NOMINAL SINGLE WINDING |
| Features Provided | POLARIZED |
| Coil Quantity | 1 |
| Environmental Protection | HERMETIC |
| Winding Quantity | 1 |
| Operating Voltage Rating and Type at Specified Temp | 120.0 VOLTS DC 25 DEG CELSIUS SINGLE WINDING |
| Terminal Type and Quantity | 14 PIN ALL FUNCTIONS |
| 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 |
|---|---|
| 520M52 | Te Connectivity Corporation (USA) |
| 271M0195P001 | Raytheon Company Dba Raytheon Co (USA) |
| Reference | Meaning |
|---|---|
| 520M52 | 5/9 Secondary reference Te Connectivity Corporation |
| WJ42HLP6H | 5/2 Secondary reference U.S. Government activity |
| WR42HLG4A | 3/2 Design control — primary reference U.S. Government activity |
| 271M0195P001 | 5/9 Secondary reference Raytheon Company Div Corp |
| 271M0195P001 | 5/9 Secondary reference Raytheon Co Missile Systems Div Oxnard Facility |
| 520M52 | 5/9 Secondary reference U.S. Government activity |
NSN 5945-00-052-4173 is a Relay,electromagnetic, manufactured by Te Connectivity Corporation, classified under FSC 5945, Relays and Solenoids. Status: active.
NSN 5945-00-052-4173 has 2 manufacturer part numbers on file: 520M52 (Te Connectivity Corporation), 271M0195P001 (Raytheon Company Dba Raytheon Co).
Key specifications for 520M52: Mounting Facility Type and Quantity: 2 UNTHREADED HOLE(S) SINGLE MOUNTING FACILITY; Overall Height: 1.310 INCHES NOMINAL IN; Pile-Up Main Contact Form Arrangement: 4C; Main Contact Maximum Voltage Rating in Volts: 115.0 AC AND 26.5 DC. 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.