The Relay,electromagnetic, cataloged under National Stock Number 5945-00-012-9199, 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 17 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5945-00-012-9199 |
| Primary Part Number | 2122DH1ND |
| Item Name | Relay,electromagnetic |
| FSC / FSG | 5945 / 59 — Relays and Solenoids |
| Manufacturer | Esna, Llc |
| Status | ACTIVE |
| Mounting Facility Type and Quantity | 4 UNTHREADED HOLE(S) SINGLE MOUNTING FACILITY |
| Main Contact Maximum Voltage Rating in Volts | 240.0 AC AND 110.0 DC |
| Mounting Facility Pattern | RECTANGULAR SINGLE MOUNTING FACILITY |
| Center to Center Distance Between Mounting Facilities Parallel to Length | 2.000 INCHES NOMINAL SINGLE MOUNTING FACILITY IN |
| Main Contact Load Current Rating at Maximum Rated Voltage | 1.5 AMPERES AC AND 750.0 MILLIAMPERES DC RESISTIVE LOAD |
| Duty Type | CONTINUOUS |
| Unthreaded Mounting Hole Diameter | 0.173 INCHES NOMINAL SINGLE MOUNTING FACILITY IN |
| Winding DC Resistance Rating | 131.0 OHMS NOMINAL SINGLE WINDING |
| Center to Center Distance Between Mounting Facilities Parallel to Height | 1.812 INCHES NOMINAL SINGLE MOUNTING FACILITY IN |
| Nominal Operating Current Rating and Type | 210.0 MILLIAMPERES DC SINGLE WINDING |
| Time Delay | 0.37 SECONDS MINIMUM AND 3.00 SECONDS MAXIMUM ADJUSTABLE RELEASE TIME |
| Coil Quantity | 1 |
| Environmental Protection | HERMETIC |
| Winding Quantity | 1 |
| Operating Voltage Rating and Type at Specified Temp | 28.0 VOLTS DC 25 DEG CELSIUS SINGLE WINDING |
| Terminal Type and Quantity | 8 PIN ALL FUNCTIONS |
| Nonpile-Up Main Contact Arrangement | 2 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 |
|---|---|
| 2122DH1ND PRIMARY | Esna, Llc (USA) |
| Reference | Meaning |
|---|---|
| 2122DH1ND | 5/9 Secondary reference Harvard Industries Inc |
| 2122DH1ND | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
NSN 5945-00-012-9199 is a Relay,electromagnetic, manufactured by Esna, Llc, classified under FSC 5945, Relays and Solenoids. Status: active.
NSN 5945-00-012-9199 has 1 manufacturer part number on file: 2122DH1ND (Esna, Llc).
Key specifications for 2122DH1ND: Mounting Facility Type and Quantity: 4 UNTHREADED HOLE(S) SINGLE MOUNTING FACILITY; Overall Height: 1.520 INCHES NOMINAL IN; Main Contact Maximum Voltage Rating in Volts: 240.0 AC AND 110.0 DC; Mounting Facility Pattern: RECTANGULAR SINGLE MOUNTING FACILITY. 17 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.