The Transformer,current, cataloged under National Stock Number 5950-01-292-9971, is classified within Federal Supply Class 5950 (Coils and Transformers) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Siemens Corp. Government technical data includes 13 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5950-01-292-9971 |
| Primary Part Number | 4NA1311-0DB20 |
| Item Name | Transformer,current |
| FSC / FSG | 5950 / 59 — Coils and Transformers |
| Manufacturer | Siemens Corp |
| Status | ACTIVE |
| Inclosure Type | FULLY INCLOSED |
| Input-Output Phase Relationship | SINGLE PHASE TO SINGLE PHASE SINGLE COMPONENT |
| Mounting Method | FOOT SINGLE GROUP |
| Body Width | 60.0 MILLIMETERS NOMINAL MM |
| Body Height | 136.0 MILLIMETERS NOMINAL MM |
| Maximum Transformer Power Rating | 2.5 VOLT-AMPERE SINGLE COMPONENT |
| Winding Function and Quantity | 1 PRIMARY AND 1 SECONDARY SINGLE COMPONENT |
| Body Length | 82.0 MILLIMETERS NOMINAL MM |
| Winding Operating Current | 1.0 AMPERES AC MAXIMUM SINGLE COMPONENT SINGLE SECONDARY |
| Winding Operating Current | 40.0 AMPERES AC MAXIMUM SINGLE COMPONENT SINGLE PRIMARY |
| Reliability Indicator | NOT ESTABLISHED |
| Frequency Rating | 50.0 HERTZ NOMINAL SINGLE COMPONENT |
| Terminal Type and Quantity | 2 TERMINAL BLOCK W/SCREWS |
| 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 |
|---|---|
| 4NA1311-0DB20 PRIMARY | Siemens Corp (USA) |
| Reference | Meaning |
|---|---|
| 4NA1311-0DB20 | C/1 Advisory reference — outside the item-of-supply concept Siemens Energy & Automation, Inc. Div Siemens Ind Services, Siemens Sales Division |
NSN 5950-01-292-9971 is a Transformer,current, manufactured by Siemens Corp, classified under FSC 5950, Coils and Transformers. Status: active.
NSN 5950-01-292-9971 has 1 manufacturer part number on file: 4NA1311-0DB20 (Siemens Corp).
Key specifications for 4NA1311-0DB20: Inclosure Type: FULLY INCLOSED; Input-Output Phase Relationship: SINGLE PHASE TO SINGLE PHASE SINGLE COMPONENT; Mounting Method: FOOT SINGLE GROUP; Body Width: 60.0 MILLIMETERS NOMINAL MM. 13 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.