The Relay,electromagnetic, cataloged under National Stock Number 5945-00-172-7707, is classified within Federal Supply Class 5945 (Relays and Solenoids) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Leach International Corp Div Leach International Corporation. Government technical data includes 27 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5945-00-172-7707 |
| Primary Part Number | KD4A027 |
| Item Name | Relay,electromagnetic |
| FSC / FSG | 5945 / 59 — Relays and Solenoids |
| Manufacturer | Leach International Corp Div Leach International Corporation |
| Status | ACTIVE |
| Mounting Facility Type and Quantity | 3 UNTHREADED HOLE(S) SECOND MOUNTING FACILITY |
| Mounting Facility Type and Quantity | 1 PLUG-IN TERMINAL(S) FIRST MOUNTING FACILITY |
| Main Contact Maximum Voltage Rating in Volts | 115.0 AC AND 28.0 DC |
| Fragility Factor | MODERATELY RUGGED |
| Mounting Facility Pattern | TRIANGLE SECOND MOUNTING FACILITY |
| Precious Material | GOLD |
| Main Contact Load Current Rating at Maximum Rated Voltage | 10.0 AMPERES AC RESISTIVE LOAD |
| Main Contact Load Current Rating at Maximum Rated Voltage | 8.0 AMPERES AC INDUCTIVE LOAD |
| Main Contact Load Current Rating at Maximum Rated Voltage | 4.0 AMPERES AC MOTOR LOAD |
| Main Contact Load Current Rating at Maximum Rated Voltage | 2.0 AMPERES AC LAMP LOAD |
| Duty Type | CONTINUOUS |
| Storage Type | GENERAL PURPOSE WAREHOUSE |
| Unthreaded Mounting Hole Diameter | 0.155 INCHES MINIMUM AND 0.161 INCHES MAXIMUM SECOND MOUNTING FACILITY IN |
| Center to Center Distance Between Mounting Facilities Parallel to the Altitude of an Isosceles Triangle | 1.396 INCHES MINIMUM AND 1.446 INCHES MAXIMUM SECOND MOUNTING FACILITY IN |
| Frequency in Hertz | 400.0 NOMINAL |
| Winding DC Resistance Rating | 280.0 OHMS MINIMUM AND 300.0 OHMS MAXIMUM SINGLE WINDING |
| Features Provided | POLARIZED |
| Time Delay | 0.02 SECONDS MAXIMUM FIXED OPERATE AND RELEASE TIME |
| Coil Quantity | 1 |
| Environmental Protection | HERMETIC |
| Precious Material and Location | TERMINALS GOLD |
| Cubic Measure | 1.061 CUBIC INCHES |
| Winding Quantity | 1 |
| Operating Voltage Rating and Type at Specified Temp | 28.0 VOLTS DC 25 DEG CELSIUS SINGLE WINDING |
| Center to Center Distance Between Mounting Facilities Parallel to Width | 0.615 INCHES MINIMUM AND 0.635 INCHES MAXIMUM SECOND MOUNTING FACILITY IN |
| Terminal Type and Quantity | 14 PIN ALL FUNCTIONS |
| Nonpile-Up Main Contact Arrangement | 4 POLE, DOUBLE THROW, ONE POSITION MOMENTARY |
| 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 |
|---|---|
| KD4A027 PRIMARY | Leach International Corp Div Leach International Corporation (USA) |
NSN 5945-00-172-7707 is a Relay,electromagnetic, manufactured by Leach International Corp Div Leach International Corporation, classified under FSC 5945, Relays and Solenoids. Status: active.
NSN 5945-00-172-7707 has 1 manufacturer part number on file: KD4A027 (Leach International Corp Div Leach International Corporation).
Key specifications for KD4A027: Mounting Facility Type and Quantity: 3 UNTHREADED HOLE(S) SECOND MOUNTING FACILITY; Mounting Facility Type and Quantity: 1 PLUG-IN TERMINAL(S) FIRST MOUNTING FACILITY; Overall Height: 1.010 INCHES MAXIMUM IN; Main Contact Maximum Voltage Rating in Volts: 115.0 AC AND 28.0 DC. 27 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.