The Relay,thermal, cataloged under National Stock Number 5945-00-643-6178, is classified within Federal Supply Class 5945 (Relays and Solenoids) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Amperite Co Inc. Government technical data includes 10 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5945-00-643-6178 |
| Primary Part Number | 26C20 |
| Item Name | Relay,thermal |
| FSC / FSG | 5945 / 59 — Relays and Solenoids |
| Manufacturer | Amperite Co Inc |
| Status | ACTIVE |
| Mounting Facility Type and Quantity | 1 OCTAL BASE PLUG-IN |
| Contact Maximum Voltage Rating in Volts | 115.0 AC |
| Delay Time in Seconds | 20.0 FIXED OPERATE NOMINAL |
| Contact Arrangement | SINGLE POLE, SINGLE THROW, NORMALLY CLOSED |
| Overall Diameter | 1.281 INCHES NOMINAL IN |
| Heater Power Rating in Watts | 2.5 |
| Heater Voltage Rating in Volts | 26.0 |
| Contact Maximum Current Rating in Amps | 3.0 AC |
| Environmental Protection | HUMIDITY PROOF |
| Terminal Type and Quantity | 7 WIRE HOOK |
| 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 |
|---|---|
| 26C20 PRIMARY | Amperite Co Inc (USA) |
NSN 5945-00-643-6178 is a Relay,thermal, manufactured by Amperite Co Inc, classified under FSC 5945, Relays and Solenoids. Status: active.
NSN 5945-00-643-6178 has 1 manufacturer part number on file: 26C20 (Amperite Co Inc).
Key specifications for 26C20: Mounting Facility Type and Quantity: 1 OCTAL BASE PLUG-IN; Contact Maximum Voltage Rating in Volts: 115.0 AC; Delay Time in Seconds: 20.0 FIXED OPERATE NOMINAL; Contact Arrangement: SINGLE POLE, SINGLE THROW, NORMALLY CLOSED. 10 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.