The Relay,thermal, cataloged under National Stock Number 5945-00-259-0976, is classified within Federal Supply Class 5945 (Relays and Solenoids) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Cooper Bussmann, Llc Dba Cooper Industries. Government technical data includes 10 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5945-00-259-0976 |
| Primary Part Number | B1584 |
| Item Name | Relay,thermal |
| FSC / FSG | 5945 / 59 — Relays and Solenoids |
| Manufacturer | Cooper Bussmann, Llc Dba Cooper Industries |
| Status | ACTIVE |
| Mounting Facility Type and Quantity | 1 PLUG-IN |
| Contact Maximum Voltage Rating in Volts | 115.0 AC |
| Delay Time in Seconds | 40.0 FIXED OPERATE MINIMUM AND 50.0 FIXED OPERATE MAXIMUM |
| Contact Arrangement | SINGLE POLE, SINGLE THROW, NORMALLY OPEN |
| Overall Diameter | 1.250 INCHES NOMINAL IN |
| Heater Power Rating in Watts | 9.0 |
| Heater Voltage Rating in Volts | 115.0 |
| Contact Maximum Current Rating in Amps | 2.0 AC |
| 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 |
|---|---|
| T746-610ALT1 | Raytheon Company (USA) |
| B1584 PRIMARY | Cooper Bussmann, Llc Dba Cooper Industries (USA) |
| T746-610ALT1 | Raytheon Company Dba Raytheon Co (USA) |
| Reference | Meaning |
|---|---|
| T746-610ALT1 | 5/9 Secondary reference Raytheon Company Div Corp |
NSN 5945-00-259-0976 is a Relay,thermal, manufactured by Cooper Bussmann, Llc Dba Cooper Industries, classified under FSC 5945, Relays and Solenoids. Status: active.
NSN 5945-00-259-0976 has 3 manufacturer part numbers on file: T746-610ALT1 (Raytheon Company), B1584 (Cooper Bussmann, Llc Dba Cooper Industries), T746-610ALT1 (Raytheon Company Dba Raytheon Co).
1 possible match (shared part number, not a government interchangeability claim): 6110-01-603-2770. Verify interchangeability with system specifications before substitution.
Key specifications for B1584: Mounting Facility Type and Quantity: 1 PLUG-IN; Contact Maximum Voltage Rating in Volts: 115.0 AC; Delay Time in Seconds: 40.0 FIXED OPERATE MINIMUM AND 50.0 FIXED OPERATE MAXIMUM; Contact Arrangement: SINGLE POLE, SINGLE THROW, NORMALLY OPEN. 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.