PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

662-0171-00Transformer,power

Berkshire Transformer · NSN 5950-00-780-8606 · FSC 5950 · No Item Name Available
Verified by PartsTable
NSN 5950-00-780-8606 — this item is cataloged by the U.S. Government under National Stock Number 5950-00-780-8606. Primary manufacturer part number: 662-0171-00.
Features
  • Transformer,power — FSC 5950
  • Mounting Method: THREADED STUD(S) SINGLE GROUP
  • Thread Series Designator: UNIFIED NATIONAL COARSE (UNC) SINGLE GROUP
  • Body Height: 2.500 INCHES NOMINAL IN
  • Winding Operating Voltage: 26.00 AC VOLTS NOMINAL AND 115.00 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE PRIMARY
  • Winding Function and Quantity: 1 PRIMARY AND 1 SECONDARY SINGLE COMPONENT
  • Body Length: 3.000 INCHES NOMINAL IN
  • Nominal Thread Size: 0.138 INCHES 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 5950-00-780-8606, 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 Berkshire Transformer. Government technical data includes 20 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5950-00-780-8606
Primary Part Number662-0171-00
Item NameTransformer,power
FSC / FSG5950 / 59 — No Item Name Available
ManufacturerBerkshire Transformer
StatusACTIVE
Mounting MethodTHREADED STUD(S) SINGLE GROUP
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC) SINGLE GROUP
Body Height2.500 INCHES NOMINAL IN
Winding Operating Voltage26.00 AC VOLTS NOMINAL AND 115.00 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE PRIMARY
Winding Function and Quantity1 PRIMARY AND 1 SECONDARY SINGLE COMPONENT
Body Length3.000 INCHES NOMINAL IN
Nominal Thread Size0.138 INCHES SINGLE GROUP IN
Winding Operating Voltage22.00 AC VOLTS NOMINAL AND 55.00 AC VOLTS NOMINAL AND 66.00 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE SECONDARY
Reliability IndicatorNOT ESTABLISHED
Body Width2.000 INCHES NOMINAL IN
Frequency Rating360.0 HERTZ MINIMUM AND 440.0 HERTZ MAXIMUM SINGLE COMPONENT
Mounting Facility Quantity4 SINGLE GROUP
Center to Center Distance Between Mounting Facilities Parallel to Width1.374 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Winding Operating Current2.0 AMPERES DC MAXIMUM SINGLE COMPONENT SINGLE SECONDARY
Inclosure TypeHERMETICALLY SEALED
Terminal Type and Quantity8 SOLDER STUD
Maximum Operating Temp130.0 CELSIUS DEGC
Input-Output Phase RelationshipSINGLE PHASE TO SINGLE PHASE SINGLE COMPONENT
Thread Quantity Per Inch32 SINGLE GROUP
Center to Center Distance Between Mounting Facilities Parallel to Length2.374 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 5
2930-00-428-617441508 INTERCHANGEABLE
Impeller,fan,axial
Cummins Inc.
1680-00-494-091441508 INTERCHANGEABLE
End Plate,pump
Eaton Corporation Dba Airframe Div Fuel & Motion Control Systems
1660-00-831-564841508 INTERCHANGEABLE
Panel Assy,control,
Honeywell International, Inc Div Aerospace-Tucson
5950-01-069-85563146347 INTERCHANGEABLE
Transformer,power
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
3020-01-479-435741508 INTERCHANGEABLE
Gear,spur
Moog Inc. Dba Ampac-Isp Corp
Cross-Reference Index
Part NumberManufacturer
662-0171-00 Berkshire Transformer (USA)
A14788 Te Connectivity Networks, Inc. Div Adc Telecommunications Sales, Inc. (USA)
662-0171-00 Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems (USA)
41508 Freed Transformer Co (USA)
Related Parts
2930-00-428-6174INTERCHANGEABLE
IMPELLER,FAN,AXIAL
41508
1680-00-494-0914INTERCHANGEABLE
END PLATE,PUMP
41508
1660-00-831-5648INTERCHANGEABLE
PANEL ASSY,CONTROL,
41508
5950-01-069-8556INTERCHANGEABLE
TRANSFORMER,POWER
3146347
3020-01-479-4357INTERCHANGEABLE
GEAR,SPUR
41508

Frequently Asked Questions

What is NSN 5950-00-780-8606?

NSN 5950-00-780-8606 is a Transformer,power, manufactured by Berkshire Transformer, classified under FSC 5950 (No Item Name Available). Status: active.

What are the part numbers for NSN 5950-00-780-8606?

NSN 5950-00-780-8606 has 4 cross-referenced part numbers: 662-0171-00 (Berkshire Transformer), A14788 (Te Connectivity Networks, Inc. Div Adc Telecommunications Sales, Inc.), 662-0171-00 (Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems), 41508 (Freed Transformer Co).

What NSN replaces 5950-00-780-8606?

There are 5 known substitutes for 5950-00-780-8606: 2930-00-428-6174, 1680-00-494-0914, 1660-00-831-5648 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 662-0171-00?

Key specifications for 662-0171-00: Mounting Method: THREADED STUD(S) SINGLE GROUP; Thread Series Designator: UNIFIED NATIONAL COARSE (UNC) SINGLE GROUP; Body Height: 2.500 INCHES NOMINAL IN; Winding Operating Voltage: 26.00 AC VOLTS NOMINAL AND 115.00 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE PRIMARY. 21 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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