The Relay,electromagnetic, cataloged under National Stock Number 5945-01-182-8120, is classified within Federal Supply Class 5945 (Relays and Solenoids) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Reliance Comm/tec Corp Lorain Products Div. Government technical data includes 20 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5945-01-182-8120 |
| Primary Part Number | 2561-427 |
| Item Name | Relay,electromagnetic |
| FSC / FSG | 5945 / 59 — Relays and Solenoids |
| Manufacturer | Reliance Comm/tec Corp Lorain Products Div |
| Status | ACTIVE |
| Mounting Facility Type and Quantity | 3 UNTHREADED HOLE(S) SINGLE MOUNTING FACILITY |
| Main Contact Maximum Voltage Rating in Volts | 600.0 AC AND 48.0 DC |
| Fragility Factor | MODERATELY RUGGED |
| Mounting Facility Pattern | TRIANGLE SINGLE MOUNTING FACILITY |
| Arc Quenching Method | AIR |
| Main Contact Load Current Rating at Maximum Rated Voltage | 40.0 AMPERES AC AND 40.0 AMPERES DC RESISTIVE LOAD |
| Duty Type | CONTINUOUS |
| Storage Type | GENERAL PURPOSE WAREHOUSE |
| Unthreaded Mounting Hole Diameter | 0.096 INCHES NOMINAL SINGLE MOUNTING FACILITY IN |
| Center to Center Distance Between Mounting Facilities Parallel to the Altitude of an Isosceles Triangle | 3.125 INCHES NOMINAL SINGLE MOUNTING FACILITY IN |
| Features Provided | POLARIZED |
| Coil Quantity | 1 |
| Cubic Measure | 54.285 CUBIC INCHES |
| Winding Quantity | 1 |
| Operating Voltage Rating and Type at Specified Temp | 240.0 VOLTS AC 25 DEG CELSIUS SINGLE WINDING |
| Center to Center Distance Between Mounting Facilities Parallel to Width | 2.000 INCHES NOMINAL SINGLE MOUNTING FACILITY IN |
| Material | PLASTIC CASE |
| Terminal Type and Quantity | 8 SCREW ALL FUNCTIONS |
| Nonpile-Up Main Contact Arrangement | 2 POLE, SINGLE THROW, NORMALLY OPEN, MOMENTARY ACTION AND 1 POLE, SINGLE THROW, NORMALLY CLOSED, MOMENTARY ACTION |
| Purpose for Which Designed | GENERAL |
| 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 |
|---|---|
| 2561-427 PRIMARY | Reliance Comm/tec Corp Lorain Products Div (USA) |
| Reference | Meaning |
|---|---|
| 2160B421AA-22 | 5/9 Secondary reference Telemecanique Inc |
| B421AA-22 | C/1 Advisory reference — outside the item-of-supply concept Schneider Electric Usa, Inc. |
| B421AA-22 | 5/9 Secondary reference Telemecanique Inc |
NSN 5945-01-182-8120 is a Relay,electromagnetic, manufactured by Reliance Comm/tec Corp Lorain Products Div, classified under FSC 5945, Relays and Solenoids. Status: active.
NSN 5945-01-182-8120 has 1 manufacturer part number on file: 2561-427 (Reliance Comm/tec Corp Lorain Products Div).
Key specifications for 2561-427: Mounting Facility Type and Quantity: 3 UNTHREADED HOLE(S) SINGLE MOUNTING FACILITY; Overall Height: 4.813 INCHES MAXIMUM IN; Main Contact Maximum Voltage Rating in Volts: 600.0 AC AND 48.0 DC; Fragility Factor: MODERATELY RUGGED. 20 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.