The Transformer,power, cataloged under National Stock Number 5950-00-564-8557, is classified within Federal Supply Class 5950 (Coils and Transformers) of the Electrical and Electronic Equipment Components group. Government technical data includes 15 specifications, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5950-00-564-8557 |
| Item Name | Transformer,power |
| FSC / FSG | 5950 / 59 — Coils and Transformers |
| Status | ACTIVE |
| Mounting Facility Quantity | 4 SINGLE GROUP |
| Inclosure Type | OPEN |
| Winding Power Rating | 0.05 KILOVOLT-AMPERES SINGLE COMPONENT ALL PRIMARY |
| Input-Output Phase Relationship | SINGLE PHASE TO SINGLE PHASE SINGLE COMPONENT |
| Mounting Method | FLANGE AND SLOT SINGLE GROUP |
| Winding Function and Quantity | 2 PRIMARY AND 1 SECONDARY SINGLE COMPONENT |
| Distance Between Mounting Facility Centers | 2.406 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN |
| Body Length | 4.875 INCHES NOMINAL IN |
| Reliability Indicator | NOT ESTABLISHED |
| Frequency Rating | 60.0 HERTZ NOMINAL SINGLE COMPONENT |
| Winding Operating Voltage | 230.00 AC VOLTS NOMINAL SINGLE COMPONENT FIRST PRIMARY |
| Winding Operating Voltage | 115.00 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE SECONDARY |
| Winding Operating Voltage | 460.00 AC VOLTS NOMINAL SINGLE COMPONENT SECOND PRIMARY |
| Terminal Type and Quantity | 6 SLOTTED LUG |
| Mounting Slot Width | 0.219 INCHES NOMINAL SINGLE GROUP IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 9T58B42/9T58P1 | 3/2 Design control — primary reference U.S. Government activity |
| 9T55Y42G2 | C/1 Advisory reference — outside the item-of-supply concept General Electric Co Outdoor Breaker Business Section |
| 9T55Y42G2 | 5/9 Secondary reference U.S. Government activity |
| 9T58B42 WITH FUSE KIT | 5/2 Secondary reference U.S. Government activity |
NSN 5950-00-564-8557 is a Transformer,power, classified under FSC 5950, Coils and Transformers. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 5950-00-824-0037. Verify interchangeability with system specifications before substitution.
Key specifications for 5950-00-564-8557: Overall Height: 3.625 INCHES NOMINAL IN; Mounting Facility Quantity: 4 SINGLE GROUP; Inclosure Type: OPEN; Winding Power Rating: 0.05 KILOVOLT-AMPERES SINGLE COMPONENT ALL PRIMARY. 15 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.