PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

7542Transformer,power

Better Engineering Manufacturing Inc · NSN 6120-01-478-1423 · FSC 6120 · Power Supply
Verified by PartsTable
NSN 6120-01-478-1423 — this item is cataloged by the U.S. Government under National Stock Number 6120-01-478-1423. Primary manufacturer part number: 7542.
Features
  • Transformer,power — FSC 6120
  • Winding Operating Voltage: 190.00 AC VOLTS NOMINAL FIRST COMPONENT FIRST PRIMARY
  • Inclosure Type: FULLY INCLOSED
  • Input-Output Phase Relationship: SINGLE PHASE TO SINGLE PHASE SINGLE COMPONENT
  • Winding Operating Voltage: 120.00 AC VOLTS NOMINAL THIRD COMPONENT THIRD SECONDARY
  • Maximum Transformer Power Rating: 2.0 KILOVOLT-AMPERE SINGLE COMPONENT
  • Winding Operating Voltage: 440.00 AC VOLTS NOMINAL SECOND COMPONENT SECOND PRIMARY
  • Frequency Rating: 50.0 HERTZ NOMINAL OR 60.0 HERTZ NOMINAL SINGLE COMPONENT
Applications
  • Electrical power distribution
  • Generator and power systems
  • Industrial motor installations
General Description

The Transformer,power, cataloged under National Stock Number 6120-01-478-1423, is classified within Federal Supply Class 6120 (Power Supply) of the Electric Wire, Power, and Distribution Equipment group. The primary manufacturer of record is Better Engineering Manufacturing Inc. Government technical data includes 9 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 1 manufacturer, 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
NSN6120-01-478-1423
Primary Part Number7542
Item NameTransformer,power
FSC / FSG6120 / 61 — Power Supply
ManufacturerBetter Engineering Manufacturing Inc
StatusACTIVE
Winding Operating Voltage190.00 AC VOLTS NOMINAL FIRST COMPONENT FIRST PRIMARY
Inclosure TypeFULLY INCLOSED
Input-Output Phase RelationshipSINGLE PHASE TO SINGLE PHASE SINGLE COMPONENT
Winding Operating Voltage120.00 AC VOLTS NOMINAL THIRD COMPONENT THIRD SECONDARY
Maximum Transformer Power Rating2.0 KILOVOLT-AMPERE SINGLE COMPONENT
Winding Operating Voltage440.00 AC VOLTS NOMINAL SECOND COMPONENT SECOND PRIMARY
Frequency Rating50.0 HERTZ NOMINAL OR 60.0 HERTZ NOMINAL SINGLE COMPONENT
Winding Operating Voltage240.00 AC VOLTS NOMINAL FOURTH COMPONENT FOURTH SECONDARY
Reliability IndicatorNOT ESTABLISHED
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 9
5905-00-073-00667542 INTERCHANGEABLE
Resistor,variable,nonwire Wound,
Iet Labs Inc
5130-00-177-70856740-20 INTERCHANGEABLE
Nut Runner and Screwdriver,elect
Milwaukee Electric Tool Corp Dba Milwaukee Electric Tools
5935-00-259-0823CO731 INTERCHANGEABLE
Connector,plug,electrical
Grimes Aerospace Company
5905-00-577-702758-501 INTERCHANGEABLE
Resistor,variable,nonwire Wound,
Clarostat Sensors and Controls
3020-01-252-5821DDN-4213-B INTERCHANGEABLE
Gear,bevel
New Holland N.v.nc.
6510-01-381-30407542 INTERCHANGEABLE
Pad,nonadherent
Cardinal Health 200, Llc
5950-01-526-9797TF217439S INTERCHANGEABLE
Transformer,current
Hubbell Incorporated Div Acme Electric
6515-01-601-64317542 INTERCHANGEABLE
Porex Medpor Biomet
Porex Surgical, Inc. Dba Stryker Cmf
5950-01-654-4696TF217439S INTERCHANGEABLE
Transformer,current
Crytologic Systems Group
Cross-Reference Index
Part NumberManufacturer
TF-2-17439-S Better Engineering Manufacturing Inc (USA)
7542 PRIMARY Better Engineering Manufacturing Inc (USA)
Related Parts
5905-00-073-0066INTERCHANGEABLE
RESISTOR,VARIABLE,NONWIRE WOUND,
7542
5130-00-177-7085INTERCHANGEABLE
NUT RUNNER AND SCREWDRIVER,ELECT
6740-20
5935-00-259-0823INTERCHANGEABLE
CONNECTOR,PLUG,ELECTRICAL
CO731
5905-00-577-7027INTERCHANGEABLE
RESISTOR,VARIABLE,NONWIRE WOUND,
58-501
3020-01-252-5821INTERCHANGEABLE
GEAR,BEVEL
DDN-4213-B
6510-01-381-3040INTERCHANGEABLE
PAD,NONADHERENT
7542
5950-01-526-9797INTERCHANGEABLE
TRANSFORMER,CURRENT
TF217439S
6515-01-601-6431INTERCHANGEABLE
POREX MEDPOR BIOMET
7542
5950-01-654-4696INTERCHANGEABLE
TRANSFORMER,CURRENT
TF217439S

Frequently Asked Questions

What is NSN 6120-01-478-1423?

NSN 6120-01-478-1423 is a Transformer,power, manufactured by Better Engineering Manufacturing Inc, classified under FSC 6120 (Power Supply). Status: active.

What are the part numbers for NSN 6120-01-478-1423?

NSN 6120-01-478-1423 has 2 cross-referenced part numbers: TF-2-17439-S (Better Engineering Manufacturing Inc), 7542 (Better Engineering Manufacturing Inc).

What NSN replaces 6120-01-478-1423?

There are 9 known substitutes for 6120-01-478-1423: 5905-00-073-0066, 5130-00-177-7085, 5935-00-259-0823 and 6 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 7542?

Key specifications for 7542: Winding Operating Voltage: 190.00 AC VOLTS NOMINAL FIRST COMPONENT FIRST PRIMARY; Inclosure Type: FULLY INCLOSED; Input-Output Phase Relationship: SINGLE PHASE TO SINGLE PHASE SINGLE COMPONENT; Winding Operating Voltage: 120.00 AC VOLTS NOMINAL THIRD COMPONENT THIRD SECONDARY. 11 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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