The Relay,electromagnetic, cataloged under National Stock Number 5945-00-246-7761, is classified within Federal Supply Class 5945 (Relays and Solenoids) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Te Connectivity Corporation. Government technical data includes 21 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5945-00-246-7761 |
| Primary Part Number | RFK1B126 |
| Item Name | Relay,electromagnetic |
| FSC / FSG | 5945 / 59 — Relays and Solenoids |
| Manufacturer | Te Connectivity Corporation |
| Status | ACTIVE |
| Mounting Facility Type and Quantity | 2 UNTHREADED HOLE(S) SINGLE MOUNTING FACILITY |
| Main Contact Maximum Voltage Rating in Volts | 28.0 DC |
| Fragility Factor | MODERATELY RUGGED |
| Mounting Facility Pattern | IN-LINE SINGLE MOUNTING FACILITY |
| Arc Quenching Method | AIR |
| Center to Center Distance Between Mounting Facilities Parallel to Length | 1.062 INCHES NOMINAL SINGLE MOUNTING FACILITY IN |
| Main Contact Load Current Rating at Maximum Rated Voltage | 2.0 AMPERES DC RESISTIVE LOAD |
| Duty Type | CONTINUOUS |
| Storage Type | GENERAL PURPOSE WAREHOUSE |
| Unthreaded Mounting Hole Diameter | 0.120 INCHES NOMINAL SINGLE MOUNTING FACILITY IN |
| Winding DC Resistance Rating | 675.0 OHMS NOMINAL SINGLE WINDING |
| Time Delay | 0.002 SECONDS MAXIMUM FIXED RELEASE TIME |
| Time Delay | 0.004 SECONDS MAXIMUM FIXED OPERATE TIME |
| Coil Quantity | 1 |
| Environmental Protection | DUSTPROOF |
| Cubic Measure | 0.221 CUBIC INCHES |
| Winding Quantity | 1 |
| Operating Voltage Rating and Type at Specified Temp | 26.5 VOLTS DC 25 DEG CELSIUS SINGLE WINDING |
| Terminal Type and Quantity | 3 QUICK DISCONNECT, MALE ALL FUNCTIONS |
| Nonpile-Up Main Contact Arrangement | 2 POLE, DOUBLE THROW, ONE POSITION MOMENTARY |
| 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 |
|---|---|
| 507-4-05127 | Leonardo Uk Ltd (GBR) |
| RFK1B126 PRIMARY | Te Connectivity Corporation (USA) |
| Reference | Meaning |
|---|---|
| RFK1B126 | 5/9 Secondary reference Hi-G Co Inc Sub of Nytronics Inc |
| 507-4-05127 | 5/9 Secondary reference British Aerospace Land & Sea Systems, Post Design Services |
| 3750344-2 | 5/2 Secondary reference U.S. Government activity |
| RFK1B126 | 5/9 Secondary reference Te Connectivity Corporation |
NSN 5945-00-246-7761 is a Relay,electromagnetic, manufactured by Te Connectivity Corporation, classified under FSC 5945, Relays and Solenoids. Status: active.
NSN 5945-00-246-7761 has 2 manufacturer part numbers on file: 507-4-05127 (Leonardo Uk Ltd), RFK1B126 (Te Connectivity Corporation).
Key specifications for RFK1B126: Mounting Facility Type and Quantity: 2 UNTHREADED HOLE(S) SINGLE MOUNTING FACILITY; Overall Height: 0.410 INCHES MAXIMUM IN; Main Contact Maximum Voltage Rating in Volts: 28.0 DC; Fragility Factor: MODERATELY RUGGED. 21 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.