The Relay,electromagnetic, cataloged under National Stock Number 5945-01-234-6403, is classified within Federal Supply Class 5945 (Relays and Solenoids) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Esna, Llc. Government technical data includes 12 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5945-01-234-6403 |
| Primary Part Number | SSFR90A |
| Item Name | Relay,electromagnetic |
| FSC / FSG | 5945 / 59 — Relays and Solenoids |
| Manufacturer | Esna, Llc |
| Status | ACTIVE |
| Mounting Facility Type and Quantity | 1 SLOTTED HOLE SINGLE MOUNTING FACILITY |
| Mounting Facility Pattern | IN-LINE SINGLE MOUNTING FACILITY |
| Center to Center Distance Between Mounting Facilities Parallel to Length | 3.125 INCHES NOMINAL SINGLE MOUNTING FACILITY IN |
| Duty Type | INTERMITTENT |
| Time Delay | 10.00 HOURS MAXIMUM ADJUSTABLE OPERATE TIME |
| Coil Quantity | 1 |
| Cubic Measure | 22.278 CUBIC INCHES |
| Winding Quantity | 1 |
| Operating Voltage Rating and Type at Specified Temp | 120.0 VOLTS AC 25 DEG CELSIUS SINGLE WINDING |
| Terminal Type and Quantity | 4 TAB W/SCREW ENERGIZING ELEMENT |
| Terminal Type and Quantity | 6 TAB W/SCREW CONTACTS |
| Mounting Slot Width | 0.188 INCHES NOMINAL SINGLE MOUNTING FACILITY IN |
| 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 |
|---|---|
| 5500073 | Evac North America Inc (USA) |
| SSFR90A PRIMARY | Esna, Llc (USA) |
| Reference | Meaning |
|---|---|
| SSFXX902XXA | 5/9 Secondary reference Harvard Industries Inc |
| SSFR90A | 3/9 Design control — primary reference Harvard Industries Inc |
| 5500073 | 5/9 Secondary reference Envirovac Inc Dba Monogram Systems-Rockford Div |
NSN 5945-01-234-6403 is a Relay,electromagnetic, manufactured by Esna, Llc, classified under FSC 5945, Relays and Solenoids. Status: active.
NSN 5945-01-234-6403 has 2 manufacturer part numbers on file: 5500073 (Evac North America Inc), SSFR90A (Esna, Llc).
1 possible match (shared part number, not a government interchangeability claim): 5945-01-382-6190. Verify interchangeability with system specifications before substitution.
Key specifications for SSFR90A: Mounting Facility Type and Quantity: 1 SLOTTED HOLE SINGLE MOUNTING FACILITY; Overall Height: 2.670 INCHES NOMINAL IN; Mounting Facility Pattern: IN-LINE SINGLE MOUNTING FACILITY; Center to Center Distance Between Mounting Facilities Parallel to Length: 3.125 INCHES NOMINAL SINGLE MOUNTING FACILITY IN. 12 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.