PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

B4040028Transformer,power

Department of the Army Hq United States Army Communications Research and Development Command · NSN 5950-01-275-0713 · FSC 5950 · No Item Name Available
Verified by PartsTable
NSN 5950-01-275-0713 — this item is cataloged by the U.S. Government under National Stock Number 5950-01-275-0713. Primary manufacturer part number: B4040028.
Features
  • Transformer,power — FSC 5950
  • Inclosure Type: FULLY INCLOSED
  • Winding Operating Current: 4.0 AMPERES DC MAXIMUM SINGLE COMPONENT FIRST SECONDARY
  • Input-Output Phase Relationship: SINGLE PHASE TO SINGLE PHASE SINGLE COMPONENT
  • Winding Operating Voltage: 24.00 AC VOLTS NOMINAL SINGLE COMPONENT FIRST SECONDARY
  • Winding Operating Current: 1.5 AMPERES DC MAXIMUM SINGLE COMPONENT THIRD SECONDARY
  • Mounting Tab Width: 0.400 INCHES NOMINAL IN
  • Terminal Type and Quantity: 12 PIN
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Transformer,power, cataloged under National Stock Number 5950-01-275-0713, 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 Department of the Army Hq United States Army Communications Research and Development Command. 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. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5950-01-275-0713
Primary Part NumberB4040028
Item NameTransformer,power
FSC / FSG5950 / 59 — No Item Name Available
ManufacturerDepartment of the Army Hq United States Army Communications Research and Development Command
StatusACTIVE
Inclosure TypeFULLY INCLOSED
Winding Operating Current4.0 AMPERES DC MAXIMUM SINGLE COMPONENT FIRST SECONDARY
Input-Output Phase RelationshipSINGLE PHASE TO SINGLE PHASE SINGLE COMPONENT
Winding Operating Voltage24.00 AC VOLTS NOMINAL SINGLE COMPONENT FIRST SECONDARY
Winding Operating Current1.5 AMPERES DC MAXIMUM SINGLE COMPONENT THIRD SECONDARY
Mounting Tab Width0.400 INCHES NOMINAL IN
Terminal Type and Quantity12 PIN
Winding Operating Current0.5 AMPERES DC MAXIMUM SINGLE COMPONENT FOURTH SECONDARY
Winding Operating Voltage28.00 AC VOLTS NOMINAL SINGLE COMPONENT FOURTH SECONDARY
Frequency Rating10.0 KILOHERTZ NOMINAL SINGLE COMPONENT
Winding Operating Voltage10.00 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE PRIMARY
Winding Operating Current4.0 AMPERES DC MAXIMUM SINGLE COMPONENT SECOND SECONDARY
Winding Operating Voltage7.00 AC VOLTS NOMINAL SINGLE COMPONENT THIRD SECONDARY
Mounting MethodBRACKET(S) AND TAB SINGLE GROUP
Center to Center Distance Between Mounting Facilities Parallel to Length1.500 INCHES MAXIMUM SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Winding Function and Quantity1 PRIMARY AND 5 SECONDARY SINGLE COMPONENT
Maximum Operating Temp105.0 CELSIUS DEGC
Center to Center Distance Between Mounting Facilities Parallel to Width0.445 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Winding Operating Voltage24.00 AC VOLTS NOMINAL SINGLE COMPONENT SECOND SECONDARY
Reliability IndicatorNOT ESTABLISHED
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 7
5310-00-155-493521RVNL172AX1-203-06 INTERCHANGEABLE
Washer,lock
Curtiss-Wright Electro-Mechanical Corporation Div Epd
5136-00-237-8149 INTERCHANGEABLE
Tap,thread Cutting
2540-00-351-0153A14115 INTERCHANGEABLE
Tarpaulin
Am General Llc
5330-00-796-440314115 INTERCHANGEABLE
Seal,plain
Parker Hannifin Corporation Dba Pneutronics Div Cylinder Division
5331-01-302-988714-115 INTERCHANGEABLE
O-Ring
Natural Gas Solutions North America Llc Div Industrial Products Group
5930-01-581-713014115 INTERCHANGEABLE
Switch,pressure
Jacobs Mfg Co the
5306-01-625-994514115 INTERCHANGEABLE
Bolt,machine
Fastenal Company Dba Fastenal Co
Cross-Reference Index
Part NumberManufacturer
B4040028 Magnetika Inc (USA)
3C391 Rayco Electronic Manufacturing, Inc. Div Rayco Electronics Mfg Inc (USA)
B4040028 PRIMARY Department of the Army Hq United States Army Communications Research and Development Command (USA)
14115 Magnespec Inc (USA)
Related Parts
5310-00-155-4935INTERCHANGEABLE
WASHER,LOCK
21RVNL172AX1-203-06
5136-00-237-8149INTERCHANGEABLE
TAP,THREAD CUTTING
2540-00-351-0153INTERCHANGEABLE
TARPAULIN
A14115
5330-00-796-4403INTERCHANGEABLE
SEAL,PLAIN
14115
5331-01-302-9887INTERCHANGEABLE
O-RING
14-115
5930-01-581-7130INTERCHANGEABLE
SWITCH,PRESSURE
14115
5306-01-625-9945INTERCHANGEABLE
BOLT,MACHINE
14115

Frequently Asked Questions

What is NSN 5950-01-275-0713?

NSN 5950-01-275-0713 is a Transformer,power, manufactured by Department of the Army Hq United States Army Communications Research and Development Command, classified under FSC 5950 (No Item Name Available). Status: active.

What are the part numbers for NSN 5950-01-275-0713?

NSN 5950-01-275-0713 has 4 cross-referenced part numbers: B4040028 (Magnetika Inc), 3C391 (Rayco Electronic Manufacturing, Inc. Div Rayco Electronics Mfg Inc), B4040028 (Department of the Army Hq United States Army Communications Research and Development Command), 14115 (Magnespec Inc).

What NSN replaces 5950-01-275-0713?

There are 7 known substitutes for 5950-01-275-0713: 5310-00-155-4935, 5136-00-237-8149, 2540-00-351-0153 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of B4040028?

Key specifications for B4040028: Inclosure Type: FULLY INCLOSED; Winding Operating Current: 4.0 AMPERES DC MAXIMUM SINGLE COMPONENT FIRST SECONDARY; Overall Height: 2.038 INCHES MAXIMUM IN; Overall Width: 1.500 INCHES MAXIMUM IN. 23 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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