PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

221-001-261Transformer,power

Sherjor Inc · NSN 5950-00-678-4045 · FSC 5950 · No Item Name Available
Verified by PartsTable
NSN 5950-00-678-4045 — this item is cataloged by the U.S. Government under National Stock Number 5950-00-678-4045. Primary manufacturer part number: 221-001-261.
Features
  • Transformer,power — FSC 5950
  • Mounting Facility Quantity: 4 SINGLE GROUP
  • Winding Function and Quantity: 1 PRIMARY AND 1 SECONDARY SINGLE COMPONENT
  • Inclosure Type: OPEN
  • Body Width: 7.080 INCHES NOMINAL IN
  • Mounting Method: FLANGE AND UNTHREADED HOLE(S) SINGLE GROUP
  • Input-Output Phase Relationship: SINGLE PHASE TO SINGLE PHASE SINGLE COMPONENT
  • Mounting Hole Diameter: 0.442 INCHES MAXIMUM SINGLE GROUP IN
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Transformer,power, cataloged under National Stock Number 5950-00-678-4045, 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 Sherjor Inc. Government technical data includes 17 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 11 commercial cross-references from 6 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
NSN5950-00-678-4045
Primary Part Number221-001-261
Item NameTransformer,power
FSC / FSG5950 / 59 — No Item Name Available
ManufacturerSherjor Inc
StatusACTIVE
Mounting Facility Quantity4 SINGLE GROUP
Winding Function and Quantity1 PRIMARY AND 1 SECONDARY SINGLE COMPONENT
Inclosure TypeOPEN
Body Width7.080 INCHES NOMINAL IN
Mounting MethodFLANGE AND UNTHREADED HOLE(S) SINGLE GROUP
Input-Output Phase RelationshipSINGLE PHASE TO SINGLE PHASE SINGLE COMPONENT
Mounting Hole Diameter0.442 INCHES MAXIMUM SINGLE GROUP IN
Terminal Type and Quantity4 WIRE LEAD
Frequency Rating400.0 HERTZ NOMINAL SINGLE COMPONENT
Body Height17.680 INCHES NOMINAL IN
Winding Operating Voltage120.00 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE SECONDARY
Cooling MethodSELF-COOLED
Center to Center Distance Between Mounting Facilities Parallel to Length8.020 INCHES MAXIMUM SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Winding Operating Voltage450.00 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE PRIMARY
Maximum Transformer Power Rating15.0 KILOVOLT-AMPERE SINGLE COMPONENT
Center to Center Distance Between Mounting Facilities Parallel to Width6.020 INCHES MAXIMUM SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Body Length10.060 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 10
5950-00-262-2249 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
5950-01-382-5662 INTERCHANGEABLE
Transformer,power
5950-01-422-65123276952GP1 INTERCHANGEABLE
Transformer,power
Naval Ship Systems Command
Cross-Reference Index
Part NumberManufacturer
221-001-261 Sherjor Inc (USA)
3313802 Allis-Chalmers Corp (USA)
230A613G02 Westinghouse Electric Corp Specialty Transformer Div (USA)
MIL-T-17221 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MIL-T-17221 450-450 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
GROUP 1, DIVISION B, 15 KVA Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
9T11Y5505 General Electric Co Outdoor Breaker Business Section (USA)
400HZ SGL PH Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
T51455 Acme Electric Corp (USA)
W8118375AA General Electric Co Outdoor Breaker Business Section (USA)
GP4 450-117V N0 L0AD Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
5950-00-262-2249INTERCHANGEABLE
TRANSFORMER,POWER
5950-00-683-0510INTERCHANGEABLE
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
5950-01-382-5662INTERCHANGEABLE
TRANSFORMER,POWER
5950-01-422-6512INTERCHANGEABLE
TRANSFORMER,POWER
3276952GP1

Frequently Asked Questions

What is NSN 5950-00-678-4045?

NSN 5950-00-678-4045 is a Transformer,power, manufactured by Sherjor Inc, classified under FSC 5950 (No Item Name Available). Status: active.

What are the part numbers for NSN 5950-00-678-4045?

NSN 5950-00-678-4045 has 11 cross-referenced part numbers: 221-001-261 (Sherjor Inc), 3313802 (Allis-Chalmers Corp), 230A613G02 (Westinghouse Electric Corp Specialty Transformer Div), MIL-T-17221 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MIL-T-17221 450-450 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M) and 6 more.

What NSN replaces 5950-00-678-4045?

There are 10 known substitutes for 5950-00-678-4045: 5950-00-262-2249, 5950-00-683-0510, 5950-00-892-8861 and 7 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 221-001-261?

Key specifications for 221-001-261: Mounting Facility Quantity: 4 SINGLE GROUP; Winding Function and Quantity: 1 PRIMARY AND 1 SECONDARY SINGLE COMPONENT; Inclosure Type: OPEN; Body Width: 7.080 INCHES NOMINAL IN. 17 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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