PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

Y66SUD1Transformer,power

Johnson Controls Inc Control Products Div · NSN 5950-00-566-1124 · FSC 5950 · No Item Name Available
Verified by PartsTable
NSN 5950-00-566-1124 — this item is cataloged by the U.S. Government under National Stock Number 5950-00-566-1124. Primary manufacturer part number: Y66SUD1.
Features
  • Transformer,power — FSC 5950
  • Inclosure Type: PARTIALLY INCLOSED, DOUBLE SHELL
  • Input-Output Phase Relationship: SINGLE PHASE TO SINGLE PHASE SINGLE COMPONENT
  • Center to Center Distance Between Mounting Facilities Parallel to Width: 2.125 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
  • Winding Operating Current: 3.0 AMPERES AC MAXIMUM SINGLE COMPONENT SINGLE SECONDARY
  • Winding Function and Quantity: 1 PRIMARY AND 1 SECONDARY SINGLE COMPONENT
  • Terminal Type and Quantity: 5 WIRE LEAD
  • Winding Power Rating: 75.0 VOLTS-AMPERES SINGLE COMPONENT SINGLE SECONDARY
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Transformer,power, cataloged under National Stock Number 5950-00-566-1124, 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 Johnson Controls Inc Control Products Div. Government technical data includes 18 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. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5950-00-566-1124
Primary Part NumberY66SUD1
Item NameTransformer,power
FSC / FSG5950 / 59 — No Item Name Available
ManufacturerJohnson Controls Inc Control Products Div
StatusACTIVE
Inclosure TypePARTIALLY INCLOSED, DOUBLE SHELL
Input-Output Phase RelationshipSINGLE PHASE TO SINGLE PHASE SINGLE COMPONENT
Center to Center Distance Between Mounting Facilities Parallel to Width2.125 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Winding Operating Current3.0 AMPERES AC MAXIMUM SINGLE COMPONENT SINGLE SECONDARY
Winding Function and Quantity1 PRIMARY AND 1 SECONDARY SINGLE COMPONENT
Terminal Type and Quantity5 WIRE LEAD
Winding Power Rating75.0 VOLTS-AMPERES SINGLE COMPONENT SINGLE SECONDARY
Center to Center Distance Between Mounting Facilities Parallel to Length3.250 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Mounting MethodFLANGE AND SLOT SINGLE GROUP
Body Length3.500 INCHES NOMINAL IN
Body Height3.375 INCHES NOMINAL IN
Frequency Rating50.0 HERTZ MINIMUM AND 60.0 HERTZ MAXIMUM SINGLE COMPONENT
Mounting Facility Quantity4 SINGLE GROUP
Reliability IndicatorNOT ESTABLISHED
Mounting Slot Width0.250 INCHES NOMINAL SINGLE GROUP IN
Body Width3.250 INCHES NOMINAL IN
Winding Operating Voltage208.00 AC VOLTS NOMINAL AND 240.00 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE PRIMARY
Winding Operating Voltage25.00 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE SECONDARY
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
5940-00-644-86680118-01 INTERCHANGEABLE
Terminal,lug
Lockheed Martin Corporation Div Rms - Mitchel Field
6630-01-012-9495 INTERCHANGEABLE
Float,ph,chamber Assembly
5331-01-426-881301181 INTERCHANGEABLE
O-Ring
Valtek Inc
Cross-Reference Index
Part NumberManufacturer
Y66SUD1 PRIMARY Johnson Controls Inc Control Products Div (USA)
01-181 Stephens Mfg Co Inc (USA)
Related Parts
5940-00-644-8668INTERCHANGEABLE
TERMINAL,LUG
0118-01
6630-01-012-9495INTERCHANGEABLE
FLOAT,PH,CHAMBER ASSEMBLY
5331-01-426-8813INTERCHANGEABLE
O-RING
01181

Frequently Asked Questions

What is NSN 5950-00-566-1124?

NSN 5950-00-566-1124 is a Transformer,power, manufactured by Johnson Controls Inc Control Products Div, classified under FSC 5950 (No Item Name Available). Status: active.

What are the part numbers for NSN 5950-00-566-1124?

NSN 5950-00-566-1124 has 2 cross-referenced part numbers: Y66SUD1 (Johnson Controls Inc Control Products Div), 01-181 (Stephens Mfg Co Inc).

What NSN replaces 5950-00-566-1124?

There are 3 known substitutes for 5950-00-566-1124: 5940-00-644-8668, 6630-01-012-9495, 5331-01-426-8813. Verify interchangeability with system specifications before substitution.

What are the specifications of Y66SUD1?

Key specifications for Y66SUD1: End Item Identification: COMPRESSOR FOR ARSR-3 (SRSE); Inclosure Type: PARTIALLY INCLOSED, DOUBLE SHELL; Input-Output Phase Relationship: SINGLE PHASE TO SINGLE PHASE SINGLE COMPONENT; Center to Center Distance Between Mounting Facilities Parallel to Width: 2.125 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN. 19 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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