The Relay,electromagnetic, cataloged under National Stock Number 5945-01-078-1577, 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 4 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 7 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5945-01-078-1577 |
| Primary Part Number | HFW1201D00 |
| Item Name | Relay,electromagnetic |
| FSC / FSG | 5945 / 59 — Relays and Solenoids |
| Manufacturer | Te Connectivity Corporation |
| Status | ACTIVE |
| Mounting Facility Type and Quantity | 1 PLUG-IN TERMINAL(S) SINGLE MOUNTING FACILITY |
| Main Contact Maximum Voltage Rating in Volts | 115.0 AC AND 28.0 DC |
| Fragility Factor | MODERATELY RUGGED |
| Arc Quenching Method | AIR |
| Precious Material | GOLD AND SILVER |
| Main Contact Load Current Rating at Maximum Rated Voltage | 500.0 MILLIAMPERES DC LAMP LOAD |
| Main Contact Load Current Rating at Maximum Rated Voltage | 2.0 AMPERES AC AND 2.0 AMPERES DC RESISTIVE LOAD |
| Main Contact Load Current Rating at Maximum Rated Voltage | 1.0 AMPERES DC INDUCTIVE LOAD |
| Duty Type | CONTINUOUS |
| Storage Type | GENERAL PURPOSE WAREHOUSE |
| Winding DC Resistance Rating | 1.25 KILOHMS NOMINAL SINGLE WINDING |
| Time Delay | 0.004 SECONDS NOMINAL FIXED OPERATE AND RELEASE TIME |
| Coil Quantity | 1 |
| Surface Treatment | GOLD CONTACT |
| Environmental Protection | HERMETIC |
| Precious Material and Location | CONTACT SURFACES GOLD AND CONTACTS SILVER |
| Winding Quantity | 1 |
| Material | NICKEL AND SILVER CONTACT |
| Terminal Type and Quantity | 8 PIN 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 |
|---|---|
| HFW1201D00 | Leach International Germany Gmbh (DEU) |
| AC/14/3/4827 | Bae Systems Gcs International Ltd (GBR) |
| HFW1201D00 PRIMARY | Te Connectivity Corporation (USA) |
| A88-0061-61 | Leonardo Uk Ltd (GBR) |
| Reference | Meaning |
|---|---|
| 150GBOG1A1250 | 5/9 Secondary reference IV-Electronic Klaus Vespermann Kg |
| HFW1201D00 | 5/9 Secondary reference General Instruments (uk) Ltd |
| 020-501 | 5/9 Secondary reference U.S. Government activity |
| 50GB0N-1-A-1.25K | 5/9 Secondary reference U.S. Government activity |
| HFW1201D00 | 5/9 Secondary reference Cp Clare Corp North American Sales Operations |
| 150GBOG1A1250 | 5/9 Secondary reference U.S. Government activity |
| HFW1201D00 | 5/9 Secondary reference Te Connectivity Corporation |
NSN 5945-01-078-1577 is a Relay,electromagnetic, manufactured by Te Connectivity Corporation, classified under FSC 5945, Relays and Solenoids. Status: active.
NSN 5945-01-078-1577 has 4 manufacturer part numbers on file: HFW1201D00 (Leach International Germany Gmbh), AC/14/3/4827 (Bae Systems Gcs International Ltd), HFW1201D00 (Te Connectivity Corporation), A88-0061-61 (Leonardo Uk Ltd).
1 possible match (shared part number, not a government interchangeability claim): 6525-01-497-4498. Verify interchangeability with system specifications before substitution.
Key specifications for HFW1201D00: Mounting Facility Type and Quantity: 1 PLUG-IN TERMINAL(S) SINGLE MOUNTING FACILITY; Overall Height: 0.455 INCHES MAXIMUM IN; Main Contact Maximum Voltage Rating in Volts: 115.0 AC AND 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.