PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

9T56Y1800Transformer,power

General Electric Company · NSN 5950-00-556-8503 · FSC 5950 · No Item Name Available
Verified by PartsTable
NSN 5950-00-556-8503 — this item is cataloged by the U.S. Government under National Stock Number 5950-00-556-8503. Primary manufacturer part number: 9T56Y1800.
Features
  • Transformer,power — FSC 5950
  • Body Width: 3.000 INCHES MAXIMUM IN
  • Winding Function and Quantity: 2 PRIMARY AND 2 SECONDARY SINGLE COMPONENT
  • Inclosure Type: OPEN
  • Mounting Method: BRACKET(S) AND SLOT SINGLE GROUP
  • Input-Output Phase Relationship: SINGLE PHASE TO SINGLE PHASE SINGLE COMPONENT
  • Mounting Facility Quantity: 4 SINGLE GROUP
  • Terminal Type and Quantity: 8 TAB, SOLDER LUG
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Transformer,power, cataloged under National Stock Number 5950-00-556-8503, 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 14 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
NSN5950-00-556-8503
Primary Part Number9T56Y1800
Item NameTransformer,power
FSC / FSG5950 / 59 — No Item Name Available
ManufacturerGeneral Electric Company
StatusACTIVE
Body Width3.000 INCHES MAXIMUM IN
Winding Function and Quantity2 PRIMARY AND 2 SECONDARY SINGLE COMPONENT
Inclosure TypeOPEN
Mounting MethodBRACKET(S) AND SLOT SINGLE GROUP
Input-Output Phase RelationshipSINGLE PHASE TO SINGLE PHASE SINGLE COMPONENT
Mounting Facility Quantity4 SINGLE GROUP
Terminal Type and Quantity8 TAB, SOLDER LUG
Winding Operating Voltage240.00 AC VOLTS MAXIMUM SINGLE COMPONENT ALL SECONDARY
Frequency Rating60.0 HERTZ NOMINAL SINGLE COMPONENT
Center to Center Distance Between Mounting Facilities Parallel to Length2.156 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Body Height3.187 INCHES MAXIMUM IN
Winding Operating Voltage480.00 AC VOLTS MAXIMUM SINGLE COMPONENT ALL PRIMARY
Maximum Transformer Power Rating0.025 KILOVOLT-AMPERE SINGLE COMPONENT
Center to Center Distance Between Mounting Facilities Parallel to Width2.500 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
4320-00-374-7315 INTERCHANGEABLE
Pump,rotary
5120-01-465-534662683 INTERCHANGEABLE
Punch,drive Pin
Colt's Manufacturing Company, Llc
Cross-Reference Index
Part NumberManufacturer
9T56Y1800 General Electric Company (USA)
515340-3 Naval Air Warfare Center Aircraft Division Joint Base Jbmdl (USA)
9T58B1800 General Electric Co Specialty Transformer Dept (USA)
9T56Y1800 General Electric Co Specialty Transformer Dept (USA)
62683 Thordarson Inc (USA)
Related Parts
4320-00-374-7315INTERCHANGEABLE
PUMP,ROTARY
5120-01-465-5346INTERCHANGEABLE
PUNCH,DRIVE PIN
62683

Frequently Asked Questions

What is NSN 5950-00-556-8503?

NSN 5950-00-556-8503 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 5950-00-556-8503?

NSN 5950-00-556-8503 has 5 cross-referenced part numbers: 9T56Y1800 (General Electric Company), 515340-3 (Naval Air Warfare Center Aircraft Division Joint Base Jbmdl), 9T58B1800 (General Electric Co Specialty Transformer Dept), 9T56Y1800 (General Electric Co Specialty Transformer Dept), 62683 (Thordarson Inc).

What NSN replaces 5950-00-556-8503?

There are 2 known substitutes for 5950-00-556-8503: 4320-00-374-7315, 5120-01-465-5346. Verify interchangeability with system specifications before substitution.

What are the specifications of 9T56Y1800?

Key specifications for 9T56Y1800: Body Width: 3.000 INCHES MAXIMUM IN; Winding Function and Quantity: 2 PRIMARY AND 2 SECONDARY SINGLE COMPONENT; Inclosure Type: OPEN; Mounting Method: BRACKET(S) AND SLOT SINGLE GROUP. 15 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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