The Relay,thermal, cataloged under National Stock Number 5945-00-503-5172, is classified within Federal Supply Class 5945 (Relays and Solenoids) of the Electrical and Electronic Equipment Components group. Government technical data includes 7 specifications, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 5945-00-503-5172 |
| Item Name | Relay,thermal |
| FSC / FSG | 5945 / 59 — Relays and Solenoids |
| Status | ACTIVE |
| Mounting Facility Type and Quantity | 2 UNTHREADED HOLE(S) |
| Contact Maximum Voltage Rating in Volts | 115.0 AC AND 28.0 DC |
| Delay Time in Seconds | 0.4 FIXED OPERATE NOMINAL |
| Contact Arrangement | SINGLE POLE, SINGLE THROW, NORMALLY OPEN |
| Heater Voltage Rating in Volts | 28.0 |
| Contact Maximum Current Rating in Amps | 3.0 AC OR 1.0 DC |
| Environmental Protection | HERMETIC |
| 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 |
|---|---|
| HF01N0-28 | 3/9 Design control — primary reference U.S. Government activity |
| ES1213-1-1F0-4 | 5/9 Secondary reference Drs Sustainment Systems, Inc. |
| GT2152 | 5/9 Secondary reference U.S. Government activity |
| HF01N0-28VR4SEC | 5/9 Secondary reference U.S. Government activity |
NSN 5945-00-503-5172 is a Relay,thermal, classified under FSC 5945, Relays and Solenoids. Status: active.
2 possible matches (shared part number, not a government interchangeability claim): 5945-00-677-0303, 5945-00-931-7595. Verify interchangeability with system specifications before substitution.
Key specifications for 5945-00-503-5172: Mounting Facility Type and Quantity: 2 UNTHREADED HOLE(S); Overall Height: 1.000 INCHES NOMINAL IN; Contact Maximum Voltage Rating in Volts: 115.0 AC AND 28.0 DC; Delay Time in Seconds: 0.4 FIXED OPERATE NOMINAL. 7 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.