The Relay,electromagnetic, cataloged under National Stock Number 5945-00-841-7979, is classified within Federal Supply Class 5945 (Relays and Solenoids) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Meggitt Safety Systems Inc. Government technical data includes 16 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5945-00-841-7979 |
| Primary Part Number | RY546 |
| Item Name | Relay,electromagnetic |
| FSC / FSG | 5945 / 59 — Relays and Solenoids |
| Manufacturer | Meggitt Safety Systems Inc |
| Status | ACTIVE |
| Mounting Facility Type and Quantity | 4 UNTHREADED HOLE(S) SINGLE MOUNTING FACILITY |
| Main Contact Maximum Voltage Rating in Volts | 120.0 AC |
| Mounting Facility Pattern | RECTANGULAR SINGLE MOUNTING FACILITY |
| Center to Center Distance Between Mounting Facilities Parallel to Length | 4.130 INCHES NOMINAL SINGLE MOUNTING FACILITY IN |
| Main Contact Load Current Rating at Maximum Rated Voltage | 5.0 AMPERES AC RESISTIVE LOAD |
| Duty Type | CONTINUOUS |
| Unthreaded Mounting Hole Diameter | 0.199 INCHES NOMINAL SINGLE MOUNTING FACILITY IN |
| Frequency in Hertz | 60.0 NOMINAL |
| Nominal Operating Current Rating and Type | 10.0 MILLIAMPERES AC SINGLE WINDING |
| Coil Quantity | 1 |
| Environmental Protection | HERMETIC AND SHOCK RESISTANT |
| Winding Quantity | 1 |
| Operating Voltage Rating and Type at Specified Temp | 120.0 VOLTS AC 25 DEG CELSIUS SINGLE WINDING |
| Center to Center Distance Between Mounting Facilities Parallel to Width | 2.250 INCHES NOMINAL SINGLE MOUNTING FACILITY IN |
| Terminal Type and Quantity | 5 PIN ALL FUNCTIONS |
| Nonpile-Up Main Contact Arrangement | 1 POLE, DOUBLE THROW, ONE POSITION MOMENTARY |
| 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 |
|---|---|
| RY546 PRIMARY | Meggitt Safety Systems Inc (USA) |
| RY546-2 | Meggitt Safety Systems Inc (USA) |
| Reference | Meaning |
|---|---|
| 719016-008 | 5/2 Secondary reference U.S. Government activity |
| HU1201RY | 5/9 Secondary reference U.S. Government activity |
| CL277 | 5/9 Secondary reference Crydom Corp |
NSN 5945-00-841-7979 is a Relay,electromagnetic, manufactured by Meggitt Safety Systems Inc, classified under FSC 5945, Relays and Solenoids. Status: active.
NSN 5945-00-841-7979 has 2 manufacturer part numbers on file: RY546 (Meggitt Safety Systems Inc), RY546-2 (Meggitt Safety Systems Inc).
Key specifications for RY546: Mounting Facility Type and Quantity: 4 UNTHREADED HOLE(S) SINGLE MOUNTING FACILITY; Overall Height: 2.500 INCHES NOMINAL IN; Main Contact Maximum Voltage Rating in Volts: 120.0 AC; Mounting Facility Pattern: RECTANGULAR SINGLE MOUNTING FACILITY. 16 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.