PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

520-55Transformer,power

Entron Industries Limited Partnership Dba Entron Industries Property Div · NSN 5950-00-647-5048 · FSC 5950 · No Item Name Available
Verified by PartsTable
NSN 5950-00-647-5048 — this item is cataloged by the U.S. Government under National Stock Number 5950-00-647-5048. Primary manufacturer part number: 520-55.
Features
  • Transformer,power — FSC 5950
  • Reliability Indicator: NOT ESTABLISHED
  • Body Height: 4.250 INCHES NOMINAL IN
  • Winding Operating Current: 2.0 AMPERES AC MAXIMUM SINGLE COMPONENT SECOND SECONDARY
  • Thread Quantity Per Inch: 32 SINGLE GROUP
  • Winding Shielding Method: INTERNAL SHIELD GROUNDED TO INCLOSURE SINGLE COMPONENT
  • Winding Operating Current: 2.5 AMPERES AC MAXIMUM SINGLE COMPONENT THIRD SECONDARY
  • Mounting Facility Quantity: 4 SINGLE GROUP
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Transformer,power, cataloged under National Stock Number 5950-00-647-5048, 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 Entron Industries Limited Partnership Dba Entron Industries Property Div. Government technical data includes 24 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5950-00-647-5048
Primary Part Number520-55
Item NameTransformer,power
FSC / FSG5950 / 59 — No Item Name Available
ManufacturerEntron Industries Limited Partnership Dba Entron Industries Property Div
StatusACTIVE
Reliability IndicatorNOT ESTABLISHED
Body Height4.250 INCHES NOMINAL IN
Winding Operating Current2.0 AMPERES AC MAXIMUM SINGLE COMPONENT SECOND SECONDARY
Thread Quantity Per Inch32 SINGLE GROUP
Winding Shielding MethodINTERNAL SHIELD GROUNDED TO INCLOSURE SINGLE COMPONENT
Winding Operating Current2.5 AMPERES AC MAXIMUM SINGLE COMPONENT THIRD SECONDARY
Mounting Facility Quantity4 SINGLE GROUP
Winding Operating Voltage6.30 AC VOLTS NOMINAL SINGLE COMPONENT THIRD SECONDARY
Nominal Thread Size0.164 INCHES SINGLE GROUP IN
Winding Operating Voltage115.00 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE PRIMARY
Inclosure TypeHERMETICALLY SEALED
Input-Output Phase RelationshipSINGLE PHASE TO SINGLE PHASE SINGLE COMPONENT
Center to Center Distance Between Mounting Facilities Parallel to Width2.281 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Frequency Rating60.0 HERTZ NOMINAL SINGLE COMPONENT
Winding Function and Quantity1 PRIMARY AND 3 SECONDARY SINGLE COMPONENT
Winding Operating Voltage5.00 AC VOLTS NOMINAL SINGLE COMPONENT SECOND SECONDARY
Body Width2.625 INCHES NOMINAL IN
Winding Operating Voltage770.00 AC VOLTS NOMINAL SINGLE COMPONENT FIRST SECONDARY
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC) SINGLE GROUP
Terminal Type and Quantity9 STANDOFF INSULATOR
Mounting MethodTHREADED STUD(S) SINGLE GROUP
Winding Operating Current80.0 MILLIAMPERES AC MAXIMUM SINGLE COMPONENT FIRST SECONDARY
Center to Center Distance Between Mounting Facilities Parallel to Length1.844 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Body Length3.063 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
3110-00-100-03501930 INTERCHANGEABLE
Cup,tapered Roller Bearing
Federal-Mogul Corp Government Sales Dept
5340-00-166-633552055 INTERCHANGEABLE
Deflector,dirt and Liquid
Honeywell International Inc. Div Aerospace - Torrance
4820-01-026-088013226E8559 INTERCHANGEABLE
Valve,angle
Cecom Lr Center
5905-01-174-8507 INTERCHANGEABLE
Resistor
4820-01-193-757452055 INTERCHANGEABLE
Disk,valve
Husco International Inc
7045-01-367-0387 INTERCHANGEABLE
Disk,flexible
Cross-Reference Index
Part NumberManufacturer
520-55 PRIMARY Entron Industries Limited Partnership Dba Entron Industries Property Div (USA)
Related Parts
3110-00-100-0350INTERCHANGEABLE
CUP,TAPERED ROLLER BEARING
1930
5340-00-166-6335INTERCHANGEABLE
DEFLECTOR,DIRT AND LIQUID
52055
4820-01-026-0880INTERCHANGEABLE
VALVE,ANGLE
13226E8559
5905-01-174-8507INTERCHANGEABLE
RESISTOR
4820-01-193-7574INTERCHANGEABLE
DISK,VALVE
52055
7045-01-367-0387INTERCHANGEABLE
DISK,FLEXIBLE

Frequently Asked Questions

What is NSN 5950-00-647-5048?

NSN 5950-00-647-5048 is a Transformer,power, manufactured by Entron Industries Limited Partnership Dba Entron Industries Property Div, classified under FSC 5950 (No Item Name Available). Status: active.

What are the part numbers for NSN 5950-00-647-5048?

NSN 5950-00-647-5048 has 1 cross-referenced part number: 520-55 (Entron Industries Limited Partnership Dba Entron Industries Property Div).

What NSN replaces 5950-00-647-5048?

There are 6 known substitutes for 5950-00-647-5048: 3110-00-100-0350, 5340-00-166-6335, 4820-01-026-0880 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 520-55?

Key specifications for 520-55: Reliability Indicator: NOT ESTABLISHED; Body Height: 4.250 INCHES NOMINAL IN; Winding Operating Current: 2.0 AMPERES AC MAXIMUM SINGLE COMPONENT SECOND SECONDARY; Thread Quantity Per Inch: 32 SINGLE GROUP. 24 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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