The Relay,thermal, cataloged under National Stock Number 5945-00-121-9845, is classified within Federal Supply Class 5945 (Relays and Solenoids) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Kurz & Root Generator Company, Llc. Government technical data includes 9 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 5 items share a part number with this NSN in the catalog (possible match — not a government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 | 5945-00-121-9845 |
| Primary Part Number | 7687 |
| Item Name | Relay,thermal |
| FSC / FSG | 5945 / 59 — Relays and Solenoids |
| Manufacturer | Kurz & Root Generator Company, Llc |
| Status | ACTIVE |
| Mounting Facility Type and Quantity | 1 PLUG-IN |
| Contact Maximum Voltage Rating in Volts | 250.0 AC AND 32.0 DC |
| Delay Time in Seconds | 10.0 FIXED OPERATE NOMINAL |
| Contact Arrangement | SINGLE POLE, SINGLE THROW, NORMALLY OPEN |
| Overall Diameter | 1.250 INCHES NOMINAL IN |
| Heater Voltage Rating in Volts | 125.0 |
| Contact Maximum Current Rating in Amps | 3.0 AC OR 1.0 DC |
| Environmental Protection | HERMETIC |
| Terminal Type and Quantity | 4 PIN |
| 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 |
|---|---|
| 7687 PRIMARY | Kurz & Root Generator Company, Llc (USA) |
| Reference | Meaning |
|---|---|
| GS-4845 | 5/9 Secondary reference U.S. Government activity |
| TOV-10-NO-125 | 5/9 Secondary reference U.S. Government activity |
NSN 5945-00-121-9845 is a Relay,thermal, manufactured by Kurz & Root Generator Company, Llc, classified under FSC 5945, Relays and Solenoids. Status: active.
NSN 5945-00-121-9845 has 1 manufacturer part number on file: 7687 (Kurz & Root Generator Company, Llc).
5 possible matches (shared part number, not a government interchangeability claim): 3805-00-705-6204, 5340-00-764-1913, 3510-01-297-3860. Verify interchangeability with system specifications before substitution.
Key specifications for 7687: Mounting Facility Type and Quantity: 1 PLUG-IN; Contact Maximum Voltage Rating in Volts: 250.0 AC AND 32.0 DC; Delay Time in Seconds: 10.0 FIXED OPERATE NOMINAL; Contact Arrangement: SINGLE POLE, SINGLE THROW, NORMALLY OPEN. 9 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.