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 5950-01-382-5662 · FSC 5950 · No Item Name Available
Verified by PartsTable
NSN 5950-01-382-5662 — this item is cataloged by the U.S. Government under National Stock Number 5950-01-382-5662. Primary manufacturer part number: MIL-T-17221.
Features
  • Transformer,power — FSC 5950
  • Frequency Rating: 400.0 HERTZ NOMINAL SINGLE COMPONENT
  • Input-Output Phase Relationship: SINGLE PHASE TO SINGLE PHASE SINGLE COMPONENT
  • Maximum Transformer Power Rating: 5.0 KILOVOLT-AMPERE SINGLE COMPONENT
  • Test Data Document: 81349-MIL-T-17221 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.).
  • Specification/standard Data: 81349-MIL-T-17221 GOVERNMENT SPECIFICATION
  • 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 5950-01-382-5662, 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 5 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 1 manufacturer, 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
NSN5950-01-382-5662
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
Frequency Rating400.0 HERTZ NOMINAL SINGLE COMPONENT
Input-Output Phase RelationshipSINGLE PHASE TO SINGLE PHASE SINGLE COMPONENT
Maximum Transformer Power Rating5.0 KILOVOLT-AMPERE SINGLE COMPONENT
Test Data Document81349-MIL-T-17221 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.).
Specification/standard Data81349-MIL-T-17221 GOVERNMENT SPECIFICATION
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
5950-01-142-5372 INTERCHANGEABLE
Transformer,power
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
5950-01-422-65123276952GP1 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
MIL-T-17221,GP2,5KVA Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
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
5950-01-142-5372INTERCHANGEABLE
TRANSFORMER,POWER
5950-01-200-2783INTERCHANGEABLE
TRANSFORMER,POWER
5950-01-325-9452INTERCHANGEABLE
TRANSFORMER,POWER
L640A15
5950-01-382-5593INTERCHANGEABLE
TRANSFORMER,POWER
5950-01-422-6512INTERCHANGEABLE
TRANSFORMER,POWER
3276952GP1

Frequently Asked Questions

What is NSN 5950-01-382-5662?

NSN 5950-01-382-5662 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 5950-01-382-5662?

NSN 5950-01-382-5662 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), MIL-T-17221,GP2,5KVA (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M).

What NSN replaces 5950-01-382-5662?

There are 10 known substitutes for 5950-01-382-5662: 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: Frequency Rating: 400.0 HERTZ NOMINAL SINGLE COMPONENT; Special Features: MIL-T-17221; GP2; Input-Output Phase Relationship: SINGLE PHASE TO SINGLE PHASE SINGLE COMPONENT; Maximum Transformer Power Rating: 5.0 KILOVOLT-AMPERE SINGLE COMPONENT. 6 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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