PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

19123B1Transformer,power

Freed Transformer Co · NSN 5950-00-647-5063 · FSC 5950 · No Item Name Available
Verified by PartsTable
NSN 5950-00-647-5063 — this item is cataloged by the U.S. Government under National Stock Number 5950-00-647-5063. Primary manufacturer part number: 19123B1.
Features
  • Transformer,power — FSC 5950
  • Winding Operating Voltage: 25.00 AC VOLTS NOMINAL SINGLE COMPONENT FOURTH SECONDARY
  • Center to Center Distance Between Mounting Facilities Parallel to Width: 2.625 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
  • Mounting Method: THREADED STUD(S) SINGLE GROUP
  • Winding Operating Voltage: 5.00 AC VOLTS NOMINAL SINGLE COMPONENT SECOND SECONDARY
  • Center to Center Distance Between Mounting Facilities Parallel to Length: 3.125 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
  • Winding Operating Voltage: 6.30 AC VOLTS NOMINAL SINGLE COMPONENT THIRD SECONDARY
  • Frequency Rating: 47.0 HERTZ MINIMUM AND 440.0 HERTZ MAXIMUM 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 5950-00-647-5063, 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 Freed Transformer Co. Government technical data includes 22 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5950-00-647-5063
Primary Part Number19123B1
Item NameTransformer,power
FSC / FSG5950 / 59 — No Item Name Available
ManufacturerFreed Transformer Co
StatusACTIVE
Winding Operating Voltage25.00 AC VOLTS NOMINAL SINGLE COMPONENT FOURTH SECONDARY
Center to Center Distance Between Mounting Facilities Parallel to Width2.625 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Mounting MethodTHREADED STUD(S) SINGLE GROUP
Winding Operating Voltage5.00 AC VOLTS NOMINAL SINGLE COMPONENT SECOND SECONDARY
Center to Center Distance Between Mounting Facilities Parallel to Length3.125 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Winding Operating Voltage6.30 AC VOLTS NOMINAL SINGLE COMPONENT THIRD SECONDARY
Frequency Rating47.0 HERTZ MINIMUM AND 440.0 HERTZ MAXIMUM SINGLE COMPONENT
Winding Operating Voltage890.00 AC VOLTS NOMINAL SINGLE COMPONENT FIRST SECONDARY
Winding Operating Current2.0 AMPERES AC MAXIMUM SINGLE COMPONENT SECOND SECONDARY
Body Length4.125 INCHES NOMINAL IN
Inclosure TypeFULLY INCLOSED
Mounting Facility Quantity4 SINGLE GROUP
Winding Operating Voltage103.50 AC VOLTS NOMINAL AND 115.00 AC VOLTS NOMINAL AND 126.50 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE PRIMARY
Winding Operating Current85.0 MILLIAMPERES AC MAXIMUM SINGLE COMPONENT FIRST SECONDARY
Input-Output Phase RelationshipSINGLE PHASE TO SINGLE PHASE SINGLE COMPONENT
Winding Function and Quantity1 PRIMARY AND 4 SECONDARY SINGLE COMPONENT
Winding Operating Current200.0 MILLIAMPERES AC MAXIMUM SINGLE COMPONENT FOURTH SECONDARY
Terminal Type and Quantity13 STANDOFF, SOLDER LUG
Winding Operating Current6.0 AMPERES AC MAXIMUM SINGLE COMPONENT THIRD SECONDARY
Reliability IndicatorNOT ESTABLISHED
Body Width3.500 INCHES NOMINAL IN
Body Height4.500 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 9
5315-00-276-4422 INTERCHANGEABLE
Key,machine
3020-00-391-809421337 INTERCHANGEABLE
Gear,spur
Maradyne Corporation
5855-00-446-590913206E7683 INTERCHANGEABLE
Spring Helical Comp
Chief of Engineers Dept of Army
5905-01-095-4312 INTERCHANGEABLE
Resistor,voltage Sensitive
3040-01-306-926919123 INTERCHANGEABLE
Shaft,straight
Lake Shore Systems, Inc.
4820-01-346-985719123 INTERCHANGEABLE
Piston,valve
Leslie Controls, Inc. Dba Leslie Controls Inc
5995-01-379-290019123 INTERCHANGEABLE
Cable Assembly,special Purpose,e
Electro Scientific Industries Inc
5120-01-430-7742 INTERCHANGEABLE
Wrench Set,socket
1005-01-714-224819123 INTERCHANGEABLE
Parts Kit,gun
Barrett Firearms Manufacturing, Inc. Dba Barrett Firearms Manufacturing Inc
Cross-Reference Index
Part NumberManufacturer
19123A1 Freed Transformer Co (USA)
B7406936 General Electric Company (USA)
19123B1 PRIMARY Freed Transformer Co (USA)
SN249B30 Mutron Corp (USA)
19123 Freed Transformer Co (USA)
Related Parts
5315-00-276-4422INTERCHANGEABLE
KEY,MACHINE
3020-00-391-8094INTERCHANGEABLE
GEAR,SPUR
21337
5855-00-446-5909INTERCHANGEABLE
SPRING HELICAL COMP
13206E7683
5905-01-095-4312INTERCHANGEABLE
RESISTOR,VOLTAGE SENSITIVE
3040-01-306-9269INTERCHANGEABLE
SHAFT,STRAIGHT
19123
4820-01-346-9857INTERCHANGEABLE
PISTON,VALVE
19123
5995-01-379-2900INTERCHANGEABLE
CABLE ASSEMBLY,SPECIAL PURPOSE,E
19123
5120-01-430-7742INTERCHANGEABLE
WRENCH SET,SOCKET
1005-01-714-2248INTERCHANGEABLE
PARTS KIT,GUN
19123

Frequently Asked Questions

What is NSN 5950-00-647-5063?

NSN 5950-00-647-5063 is a Transformer,power, manufactured by Freed Transformer Co, classified under FSC 5950 (No Item Name Available). Status: active.

What are the part numbers for NSN 5950-00-647-5063?

NSN 5950-00-647-5063 has 5 cross-referenced part numbers: 19123A1 (Freed Transformer Co), B7406936 (General Electric Company), 19123B1 (Freed Transformer Co), SN249B30 (Mutron Corp), 19123 (Freed Transformer Co).

What NSN replaces 5950-00-647-5063?

There are 9 known substitutes for 5950-00-647-5063: 5315-00-276-4422, 3020-00-391-8094, 5855-00-446-5909 and 6 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 19123B1?

Key specifications for 19123B1: Winding Operating Voltage: 25.00 AC VOLTS NOMINAL SINGLE COMPONENT FOURTH SECONDARY; Center to Center Distance Between Mounting Facilities Parallel to Width: 2.625 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN; Mounting Method: THREADED STUD(S) SINGLE GROUP; Winding Operating Voltage: 5.00 AC VOLTS NOMINAL SINGLE COMPONENT SECOND SECONDARY. 22 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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