PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

9T11Y5538Transformer,power

General Electric Company · NSN 5950-00-081-0461 · FSC 5950 · No Item Name Available
Verified by PartsTable
NSN 5950-00-081-0461 — this item is cataloged by the U.S. Government under National Stock Number 5950-00-081-0461. Primary manufacturer part number: 9T11Y5538.
Features
  • Transformer,power — FSC 5950
  • Center to Center Distance Between Mounting Facilities Parallel to Length: 5.000 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
  • Frequency Rating: 400.0 HERTZ NOMINAL SINGLE COMPONENT
  • Body Width: 7.090 INCHES NOMINAL IN
  • Winding Operating Voltage: 450.00 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE PRIMARY
  • Center to Center Distance Between Mounting Facilities Parallel to Width: 4.120 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
  • Body Height: 10.840 INCHES NOMINAL IN
  • Input-Output Phase Relationship: SINGLE PHASE TO SINGLE PHASE SINGLE COMPONENT
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Transformer,power, cataloged under National Stock Number 5950-00-081-0461, 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 General Electric Company. Government technical data includes 17 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5950-00-081-0461
Primary Part Number9T11Y5538
Item NameTransformer,power
FSC / FSG5950 / 59 — No Item Name Available
ManufacturerGeneral Electric Company
StatusACTIVE
Center to Center Distance Between Mounting Facilities Parallel to Length5.000 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Frequency Rating400.0 HERTZ NOMINAL SINGLE COMPONENT
Body Width7.090 INCHES NOMINAL IN
Winding Operating Voltage450.00 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE PRIMARY
Center to Center Distance Between Mounting Facilities Parallel to Width4.120 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Body Height10.840 INCHES NOMINAL IN
Input-Output Phase RelationshipSINGLE PHASE TO SINGLE PHASE SINGLE COMPONENT
Inclosure TypeFULLY INCLOSED
Body Length5.880 INCHES NOMINAL IN
Mounting Facility Quantity4 SINGLE GROUP
Mounting Hole Diameter0.418 INCHES NOMINAL SINGLE GROUP IN
Terminal Type and Quantity4 WIRE LEAD
Winding Function and Quantity1 PRIMARY AND 1 SECONDARY SINGLE COMPONENT
Reliability IndicatorNOT ESTABLISHED
Winding Operating Voltage230.00 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE SECONDARY
Mounting MethodFLANGE AND UNTHREADED HOLE(S) SINGLE GROUP
Winding Operating Current13.05 AMPERES AC MINIMUM SINGLE COMPONENT SINGLE SECONDARY
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
5950-00-688-6355S230A614G04 INTERCHANGEABLE
Transformer,power
Westinghouse Electric Corp
5950-00-973-2112221-001-155 INTERCHANGEABLE
Transformer,power
Power Paragon, Inc. Dba Power Magnetics Div Power Magnetics
Cross-Reference Index
Part NumberManufacturer
9T11Y5538 General Electric Company (USA)
9T11Y5538 General Electric Co Switchgear and Control Division of Apparatus Group (USA)
W8118371AC2 General Electric Co Switchgear and Control Division of Apparatus Group (USA)
MILT17221TYPESD Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
244-001-390 Sherjor Inc (USA)
Related Parts
5950-00-688-6355INTERCHANGEABLE
TRANSFORMER,POWER
S230A614G04
5950-00-973-2112INTERCHANGEABLE
TRANSFORMER,POWER
221-001-155

Frequently Asked Questions

What is NSN 5950-00-081-0461?

NSN 5950-00-081-0461 is a Transformer,power, manufactured by General Electric Company, classified under FSC 5950 (No Item Name Available). Status: active.

What are the part numbers for NSN 5950-00-081-0461?

NSN 5950-00-081-0461 has 5 cross-referenced part numbers: 9T11Y5538 (General Electric Company), 9T11Y5538 (General Electric Co Switchgear and Control Division of Apparatus Group), W8118371AC2 (General Electric Co Switchgear and Control Division of Apparatus Group), MILT17221TYPESD (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), 244-001-390 (Sherjor Inc).

What NSN replaces 5950-00-081-0461?

There are 2 known substitutes for 5950-00-081-0461: 5950-00-688-6355, 5950-00-973-2112. Verify interchangeability with system specifications before substitution.

What are the specifications of 9T11Y5538?

Key specifications for 9T11Y5538: Center to Center Distance Between Mounting Facilities Parallel to Length: 5.000 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN; Frequency Rating: 400.0 HERTZ NOMINAL SINGLE COMPONENT; Body Width: 7.090 INCHES NOMINAL IN; Winding Operating Voltage: 450.00 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE PRIMARY. 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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