The Relay,thermal, cataloged under National Stock Number 5945-01-407-5571, is classified within Federal Supply Class 5945 (Relays and Solenoids) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Mackay Communications Inc Dba Mackay Marine. Government technical data includes 4 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5945-01-407-5571 |
| Primary Part Number | 5005911 |
| Item Name | Relay,thermal |
| FSC / FSG | 5945 / 59 — Relays and Solenoids |
| Manufacturer | Mackay Communications Inc Dba Mackay Marine |
| Status | ACTIVE |
| Contact Maximum Voltage Rating in Volts | 440.0 AC |
| Delay Time in Seconds | 0.008 FIXED RELEASE MINIMUM AND 0.018 FIXED RELEASE MAXIMUM |
| Contact Arrangement | SINGLE POLE, SINGLE THROW, NORMALLY OPEN |
| Heater Voltage Rating in Volts | 25.0 |
| 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 |
|---|---|
| 5005911 | Mackay Communications Inc Dba Mackay Marine (USA) |
| Reference | Meaning |
|---|---|
| CT3-12-4A | 3/9 Design control — primary reference Sprecher and Schuh Inc S and S Controls Div |
| BH9034759B INDEX-12 | 5/9 Secondary reference U.S. Government activity |
NSN 5945-01-407-5571 is a Relay,thermal, manufactured by Mackay Communications Inc Dba Mackay Marine, classified under FSC 5945, Relays and Solenoids. Status: active.
NSN 5945-01-407-5571 has 1 manufacturer part number on file: 5005911 (Mackay Communications Inc Dba Mackay Marine).
Key specifications for 5005911: Contact Maximum Voltage Rating in Volts: 440.0 AC; Delay Time in Seconds: 0.008 FIXED RELEASE MINIMUM AND 0.018 FIXED RELEASE MAXIMUM; Contact Arrangement: SINGLE POLE, SINGLE THROW, NORMALLY OPEN; Heater Voltage Rating in Volts: 25.0. 4 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.