The Relay,electromagnetic, cataloged under National Stock Number 5945-01-137-5248, is classified within Federal Supply Class 5945 (Relays and Solenoids) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Siemens Energy and Automation Inc Siemens Furnas Controls Div. Government technical data includes 14 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. 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 | 5945-01-137-5248 |
| Primary Part Number | 42CE25AJ |
| Item Name | Relay,electromagnetic |
| FSC / FSG | 5945 / 59 — Relays and Solenoids |
| Manufacturer | Siemens Energy and Automation Inc Siemens Furnas Controls Div |
| Status | ACTIVE |
| Mounting Facility Type and Quantity | 4 UNTHREADED HOLE(S) SINGLE MOUNTING FACILITY |
| Main Contact Maximum Voltage Rating in Volts | 600.0 DC |
| Mounting Facility Pattern | RECTANGULAR SINGLE MOUNTING FACILITY |
| Center to Center Distance Between Mounting Facilities Parallel to Length | 2.125 INCHES NOMINAL SINGLE MOUNTING FACILITY IN |
| Main Contact Load Current Rating at Maximum Rated Voltage | 50.0 AMPERES DC RESISTIVE LOAD |
| Duty Type | CONTINUOUS |
| Unthreaded Mounting Hole Diameter | 0.201 INCHES NOMINAL SINGLE MOUNTING FACILITY IN |
| Frequency in Hertz | 50.0 MINIMUM AND 60.0 MAXIMUM |
| Center to Center Distance Between Mounting Facilities Parallel to Height | 3.125 INCHES NOMINAL SINGLE MOUNTING FACILITY IN |
| Coil Quantity | 1 |
| Winding Quantity | 1 |
| Operating Voltage Rating and Type at Specified Temp | 24.0 VOLTS AC 25 DEG CELSIUS SINGLE WINDING |
| Terminal Type and Quantity | 10 SCREW ALL FUNCTIONS |
| Nonpile-Up Main Contact Arrangement | 4 POLE, SINGLE THROW, NORMALLY OPEN, MOMENTARY ACTION |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
NSN 5945-01-137-5248 is a Relay,electromagnetic, manufactured by Siemens Energy and Automation Inc Siemens Furnas Controls Div, classified under FSC 5945, Relays and Solenoids. Status: active.
NSN 5945-01-137-5248 has 2 manufacturer part numbers on file: 970031 (Seaman Corp Seaman Building Systems Div), 42CE25AJ (Siemens Energy and Automation Inc Siemens Furnas Controls Div).
1 possible match (shared part number, not a government interchangeability claim): 6505-01-442-0346. Verify interchangeability with system specifications before substitution.
Key specifications for 42CE25AJ: Mounting Facility Type and Quantity: 4 UNTHREADED HOLE(S) SINGLE MOUNTING FACILITY; Overall Height: 3.625 INCHES NOMINAL IN; Main Contact Maximum Voltage Rating in Volts: 600.0 DC; Mounting Facility Pattern: RECTANGULAR SINGLE MOUNTING FACILITY. 14 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.