The Relay,electromagnetic, cataloged under National Stock Number 5945-01-278-4959, is classified within Federal Supply Class 5945 (Relays and Solenoids) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Deltrol Corp Deltrol Controls Div. Government technical data includes 19 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5945-01-278-4959 |
| Primary Part Number | 20238-83 |
| Item Name | Relay,electromagnetic |
| FSC / FSG | 5945 / 59 — Relays and Solenoids |
| Manufacturer | Deltrol Corp Deltrol Controls Div |
| Status | ACTIVE |
| Mounting Facility Type and Quantity | 2 UNTHREADED HOLE(S) SINGLE MOUNTING FACILITY |
| Main Contact Maximum Voltage Rating in Volts | 240.0 AC |
| Fragility Factor | MODERATELY RUGGED |
| Mounting Facility Pattern | IN-LINE SINGLE MOUNTING FACILITY |
| Arc Quenching Method | AIR |
| Main Contact Load Current Rating at Maximum Rated Voltage | 25.0 AMPERES AC RESISTIVE LOAD |
| Duty Type | CONTINUOUS |
| Storage Type | GENERAL PURPOSE WAREHOUSE |
| Unthreaded Mounting Hole Diameter | 0.188 INCHES NOMINAL SINGLE MOUNTING FACILITY IN |
| Winding DC Resistance Rating | 290.0 OHMS NOMINAL SINGLE WINDING |
| Coil Quantity | 1 |
| Cubic Measure | 19.855 CUBIC INCHES |
| 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 | 1.875 INCHES NOMINAL SINGLE MOUNTING FACILITY IN |
| Material | PLASTIC CASE |
| Terminal Type and Quantity | 4 SCREW ALL FUNCTIONS |
| Nonpile-Up Main Contact Arrangement | 1 POLE, SINGLE THROW, NORMALLY OPEN, DOUBLE MAKE, 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 |
|---|---|
| 20238-83 PRIMARY | Deltrol Corp Deltrol Controls Div (USA) |
| Reference | Meaning |
|---|---|
| C-197 | 5/9 Secondary reference Econospect Corp |
NSN 5945-01-278-4959 is a Relay,electromagnetic, manufactured by Deltrol Corp Deltrol Controls Div, classified under FSC 5945, Relays and Solenoids. Status: active.
NSN 5945-01-278-4959 has 1 manufacturer part number on file: 20238-83 (Deltrol Corp Deltrol Controls Div).
1 possible match (shared part number, not a government interchangeability claim): 5995-01-605-4872. Verify interchangeability with system specifications before substitution.
Key specifications for 20238-83: Mounting Facility Type and Quantity: 2 UNTHREADED HOLE(S) SINGLE MOUNTING FACILITY; Overall Height: 2.375 INCHES MAXIMUM IN; Main Contact Maximum Voltage Rating in Volts: 240.0 AC; Fragility Factor: MODERATELY RUGGED. 19 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.