The Transformer,power, cataloged under National Stock Number 5950-00-015-6645, is classified within Federal Supply Class 5950 (Coils and Transformers) of the Electrical and Electronic Equipment Components group. The manufacturer of record is L3 Technologies, Inc. Div Communication Systems-East. Government technical data includes 20 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5950-00-015-6645 |
| Primary Part Number | 2187973-1 |
| Item Name | Transformer,power |
| FSC / FSG | 5950 / 59 — Coils and Transformers |
| Manufacturer | L3 Technologies, Inc. Div Communication Systems-East |
| Status | ACTIVE |
| Transformer Winding Connection Type | DELTA-WYE |
| Mounting Facility Quantity | 4 SINGLE GROUP |
| Inclosure Type | HERMETICALLY SEALED |
| Center to Center Distance Between Mounting Facilities Parallel to Length | 8.000 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN |
| Winding Power Rating | 1.2 KILOVOLT-AMPERES SINGLE COMPONENT SINGLE SECONDARY |
| Input-Output Phase Relationship | THREE PHASE TO THREE PHASE SINGLE COMPONENT |
| Mounting Method | THREADED HOLE(S) SINGLE GROUP |
| Winding Function and Quantity | 1 PRIMARY AND 1 SECONDARY SINGLE COMPONENT |
| Winding Shielding Method | INTERNAL SHIELD GROUNDED TO INCLOSURE SINGLE COMPONENT |
| Nominal Thread Size | 0.190 INCHES SINGLE GROUP IN |
| Maximum Operating Temp | 130.0 CELSIUS DEGC |
| Winding Operating Current | 10.0 AMPERES AC NOMINAL SINGLE COMPONENT SINGLE SECONDARY |
| Reliability Indicator | NOT ESTABLISHED |
| Frequency Rating | 400.0 HERTZ NOMINAL SINGLE COMPONENT |
| Center to Center Distance Between Mounting Facilities Parallel to Width | 5.000 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN |
| Winding Operating Voltage | 440.00 AC VOLTS NOMINAL SINGLE COMPONENT ALL PRIMARY |
| Winding Operating Voltage | 115.00 AC VOLTS NOMINAL SINGLE COMPONENT ALL SECONDARY |
| Terminal Type and Quantity | 7 STANDOFF, THREADED STUD |
| Thread Series Designator | UNF SINGLE GROUP |
| Hazardous Locations/environmental Protection | HUMIDITY RESISTANT AND VIBRATION RESISTANT AND SALT SPRAY RESISTANT |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 2187973-1 | L3 Technologies, Inc. Div Communication Systems-East (USA) |
| 02166 | Magnetika Inc (USA) |
| Reference | Meaning |
|---|---|
| E16481 | 5/2 Secondary reference U.S. Government activity |
| 2187973-1 | 3/9 Design control — primary reference Lockheed Martin Corporation Dba Lockheed Martin Div Lockheed Martin |
| WE1265 | 5/9 Secondary reference Wems Electronics Transformer Group |
NSN 5950-00-015-6645 is a Transformer,power, manufactured by L3 Technologies, Inc. Div Communication Systems-East, classified under FSC 5950, Coils and Transformers. Status: active.
NSN 5950-00-015-6645 has 2 manufacturer part numbers on file: 2187973-1 (L3 Technologies, Inc. Div Communication Systems-East), 02166 (Magnetika Inc).
Key specifications for 2187973-1: Overall Height: 6.500 INCHES MAXIMUM IN; Transformer Winding Connection Type: DELTA-WYE; Mounting Facility Quantity: 4 SINGLE GROUP; Inclosure Type: HERMETICALLY SEALED. 20 specifications are documented in the U.S. Government catalog.
Possible hazard — SDS may be required (DLA HMIC P). 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.