The Relay,thermal, cataloged under National Stock Number 5945-00-552-2839, is classified within Federal Supply Class 5945 (Relays and Solenoids) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Nault Robert Dba Tdr Electronics. Government technical data includes 7 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5945-00-552-2839 |
| Primary Part Number | TDR3770 |
| Item Name | Relay,thermal |
| FSC / FSG | 5945 / 59 — Relays and Solenoids |
| Manufacturer | Nault Robert Dba Tdr Electronics |
| Status | ACTIVE |
| Mounting Facility Type and Quantity | 2 UNTHREADED HOLE(S) |
| Contact Maximum Voltage Rating in Volts | 115.0 AC |
| Delay Time in Seconds | 1.25 FIXED OPERATE NOMINAL |
| Contact Arrangement | SINGLE POLE, SINGLE THROW, NORMALLY OPEN |
| Heater Power Rating in Watts | 4.0 |
| Heater Voltage Rating in Volts | 28.0 |
| Contact Maximum Current Rating in Amps | 3.0 AC |
| 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 |
|---|---|
| TDR3770 | Nault Robert Dba Tdr Electronics (USA) |
| Reference | Meaning |
|---|---|
| HF01N028-1-25 | 5/9 Secondary reference U.S. Government activity |
| HF01N0-28V1R25SEC | 5/9 Secondary reference U.S. Government activity |
| 2-6-095-1229 | 5/9 Secondary reference U.S. Government activity |
| GT-5456 | 3/9 Design control — primary reference U.S. Government activity |
NSN 5945-00-552-2839 is a Relay,thermal, manufactured by Nault Robert Dba Tdr Electronics, classified under FSC 5945, Relays and Solenoids. Status: active.
NSN 5945-00-552-2839 has 1 manufacturer part number on file: TDR3770 (Nault Robert Dba Tdr Electronics).
Key specifications for TDR3770: 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; Delay Time in Seconds: 1.25 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.