PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MIL-T-17221Transformer,power

Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M · NSN 5950-01-142-5372 · FSC 5950 · No Item Name Available
Verified by PartsTable
NSN 5950-01-142-5372 — this item is cataloged by the U.S. Government under National Stock Number 5950-01-142-5372. Primary manufacturer part number: MIL-T-17221.
Features
  • Transformer,power — FSC 5950
  • Winding Power Rating: UNABLE TO DECODE
  • Winding Power Rating: 25.0 KILOVOLT-AMPERES SINGLE COMPONENT ALL SECONDARY
  • 2 verified cross-references
  • Primary manufacturer: Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Transformer,power, cataloged under National Stock Number 5950-01-142-5372, is classified within Federal Supply Class 5950 (No Item Name Available) of the Electrical and Electronic Equipment Components group. The primary manufacturer of record is Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M. Government technical data includes 2 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5950-01-142-5372
Primary Part NumberMIL-T-17221
Item NameTransformer,power
FSC / FSG5950 / 59 — No Item Name Available
ManufacturerMilitary Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
StatusACTIVE
Winding Power RatingUNABLE TO DECODE
Winding Power Rating25.0 KILOVOLT-AMPERES SINGLE COMPONENT ALL SECONDARY
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 10
5950-00-262-2249 INTERCHANGEABLE
Transformer,power
5950-00-678-4045 INTERCHANGEABLE
Transformer,power
5950-00-683-0510 INTERCHANGEABLE
Transformer,power
5950-00-892-8861 INTERCHANGEABLE
Transformer,power
5950-00-973-2112221-001-155 INTERCHANGEABLE
Transformer,power
Power Paragon, Inc. Dba Power Magnetics Div Power Magnetics
5950-01-200-2783 INTERCHANGEABLE
Transformer,power
5950-01-325-9452L640A15 INTERCHANGEABLE
Transformer,power
Aq Transformer Solutions Inc.
5950-01-382-5593 INTERCHANGEABLE
Transformer,power
5950-01-382-5662 INTERCHANGEABLE
Transformer,power
5950-01-422-65123276952GP1 INTERCHANGEABLE
Transformer,power
Naval Ship Systems Command
Cross-Reference Index
Part NumberManufacturer
MIL-T-17221 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
S230A697G07 Westinghouse Electric Corp Specialty Transformer Div (USA)
Related Parts
5950-00-262-2249INTERCHANGEABLE
TRANSFORMER,POWER
5950-00-678-4045INTERCHANGEABLE
TRANSFORMER,POWER
5950-00-683-0510INTERCHANGEABLE
TRANSFORMER,POWER
5950-00-892-8861INTERCHANGEABLE
TRANSFORMER,POWER
5950-00-973-2112INTERCHANGEABLE
TRANSFORMER,POWER
221-001-155
5950-01-200-2783INTERCHANGEABLE
TRANSFORMER,POWER
5950-01-325-9452INTERCHANGEABLE
TRANSFORMER,POWER
L640A15
5950-01-382-5593INTERCHANGEABLE
TRANSFORMER,POWER
5950-01-382-5662INTERCHANGEABLE
TRANSFORMER,POWER
5950-01-422-6512INTERCHANGEABLE
TRANSFORMER,POWER
3276952GP1

Frequently Asked Questions

What is NSN 5950-01-142-5372?

NSN 5950-01-142-5372 is a Transformer,power, manufactured by Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M, classified under FSC 5950 (No Item Name Available). Status: active.

What are the part numbers for NSN 5950-01-142-5372?

NSN 5950-01-142-5372 has 2 cross-referenced part numbers: MIL-T-17221 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), S230A697G07 (Westinghouse Electric Corp Specialty Transformer Div).

What NSN replaces 5950-01-142-5372?

There are 10 known substitutes for 5950-01-142-5372: 5950-00-262-2249, 5950-00-678-4045, 5950-00-683-0510 and 7 more. Verify interchangeability with system specifications before substitution.

What are the specifications of MIL-T-17221?

Key specifications for MIL-T-17221: Winding Power Rating: UNABLE TO DECODE; Winding Power Rating: 25.0 KILOVOLT-AMPERES SINGLE COMPONENT ALL SECONDARY. 2 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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