The Relay,rotary, cataloged under National Stock Number 5945-00-520-9771, is classified within Federal Supply Class 5945 (Relays and Solenoids) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Electro Switch Corp. Dba Oak Grisgsby Div Electroswitch. Government technical data includes 8 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5945-00-520-9771 |
| Primary Part Number | RS51240 |
| Item Name | Relay,rotary |
| FSC / FSG | 5945 / 59 — Relays and Solenoids |
| Manufacturer | Electro Switch Corp. Dba Oak Grisgsby Div Electroswitch |
| Status | ACTIVE |
| Coil DC Resistance | 11.1 OHMS NOMINAL |
| Structural Design | SECTIONAL |
| DC Operating Voltage Rating in Volts | 15.0 NOMINAL |
| Contact Terminal Quantity | 46 |
| Section Quantity | 3 |
| Coil Terminal Quantity | 2 |
| Mounting Configuration | THREE 0.177 IN. DIA MTG HOLES SPACED ON THE CORNERS OF AN ISOSCELES TRIANGLE,BASE 1.380 IN.,ALTITUDE 2.750 IN. IN |
| Coil Winding Quantity | 1 |
| 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 |
|---|---|
| RS51240 | Electro Switch Corp. Dba Oak Grisgsby Div Electroswitch (USA) |
| Reference | Meaning |
|---|---|
| 973900-3 | 3/2 Design control — primary reference U.S. Government activity |
| B60966-001 | 5/2 Secondary reference U.S. Government activity |
NSN 5945-00-520-9771 is a Relay,rotary, manufactured by Electro Switch Corp. Dba Oak Grisgsby Div Electroswitch, classified under FSC 5945, Relays and Solenoids. Status: active.
NSN 5945-00-520-9771 has 1 manufacturer part number on file: RS51240 (Electro Switch Corp. Dba Oak Grisgsby Div Electroswitch).
Key specifications for RS51240: Overall Height: 2.720 INCHES NOMINAL IN; Coil DC Resistance: 11.1 OHMS NOMINAL; Structural Design: SECTIONAL; DC Operating Voltage Rating in Volts: 15.0 NOMINAL. 8 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.