PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

245B978H01Transformer,power

Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp · NSN 5950-00-945-0926 · FSC 5950 · No Item Name Available
Verified by PartsTable
NSN 5950-00-945-0926 — this item is cataloged by the U.S. Government under National Stock Number 5950-00-945-0926. Primary manufacturer part number: 245B978H01.
Features
  • Transformer,power — FSC 5950
  • Winding Operating Voltage: 90.00 AC VOLTS NOMINAL SINGLE COMPONENT FOURTH SECONDARY
  • Center to Center Distance Between Mounting Facilities Parallel to Width: 1.750 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
  • Center to Center Distance Between Mounting Facilities Parallel to Length: 2.125 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
  • Mounting Method: THREADED STUD(S) SINGLE GROUP
  • Reliability Indicator: NOT ESTABLISHED
  • Thread Quantity Per Inch: 32 SINGLE GROUP
  • Body Height: 2.375 INCHES NOMINAL IN
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Transformer,power, cataloged under National Stock Number 5950-00-945-0926, 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 Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp. Government technical data includes 26 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5950-00-945-0926
Primary Part Number245B978H01
Item NameTransformer,power
FSC / FSG5950 / 59 — No Item Name Available
ManufacturerNorthrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp
StatusACTIVE
Winding Operating Voltage90.00 AC VOLTS NOMINAL SINGLE COMPONENT FOURTH SECONDARY
Center to Center Distance Between Mounting Facilities Parallel to Width1.750 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Center to Center Distance Between Mounting Facilities Parallel to Length2.125 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Mounting MethodTHREADED STUD(S) SINGLE GROUP
Reliability IndicatorNOT ESTABLISHED
Thread Quantity Per Inch32 SINGLE GROUP
Body Height2.375 INCHES NOMINAL IN
Input-Output Phase RelationshipSINGLE PHASE TO SINGLE PHASE SINGLE COMPONENT
Winding Operating Voltage32.30 AC VOLTS NOMINAL SINGLE COMPONENT FIRST SECONDARY
Winding Operating Current2.0 AMPERES AC MAXIMUM SINGLE COMPONENT FOURTH SECONDARY
Body Width3.812 INCHES NOMINAL IN
Mounting Facility Quantity4 SINGLE GROUP
Frequency Rating400.0 HERTZ NOMINAL SINGLE COMPONENT
Winding Operating Voltage22.20 AC VOLTS NOMINAL SINGLE COMPONENT SECOND SECONDARY
Winding Operating Voltage43.20 AC VOLTS NOMINAL SINGLE COMPONENT THIRD SECONDARY
Winding Operating Current290.0 MILLIAMPERES AC MAXIMUM SINGLE COMPONENT SECOND SECONDARY
Terminal Type and Quantity14 TAB, SOLDER LUG
Winding Operating Voltage111.00 AC VOLTS NOMINAL AND 115.00 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE PRIMARY
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC) SINGLE GROUP
Inclosure TypeFULLY INCLOSED
Winding Operating Current1.13 AMPERES AC MAXIMUM SINGLE COMPONENT THIRD SECONDARY
Winding Shielding MethodINTERNAL SHIELD GROUNDED TO CORE SINGLE COMPONENT
Winding Operating Current31.0 MILLIAMPERES AC MAXIMUM SINGLE COMPONENT FIRST SECONDARY
Nominal Thread Size0.138 INCHES SINGLE GROUP IN
Winding Function and Quantity1 PRIMARY AND 4 SECONDARY SINGLE COMPONENT
Body Length2.125 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 8
6670-00-020-1365 INTERCHANGEABLE
Scale,weighing
5120-00-240-52525130-00-240-5252 INTERCHANGEABLE
Bit,screwdriver
General Services Administration Federal Supply Service
2920-00-421-7197J4486601 INTERCHANGEABLE
Drive,engine,electrical Starter
Chrysler Corp Engine and Components Sales Diversified Products Div
5310-00-999-1069 INTERCHANGEABLE
Washer
9320-01-137-35728905 INTERCHANGEABLE
Rubber Rolls
Columbia Machine Inc
4310-01-269-03648905A INTERCHANGEABLE
Vacuum Pump Unit,rotary
Welch Vacuum Technology Inc
7025-01-413-2022 INTERCHANGEABLE
Disk Drive Unit
4820-01-418-65118905 INTERCHANGEABLE
Repair Kit,valve
Akron Brass Company
Cross-Reference Index
Part NumberManufacturer
245B978H01 PRIMARY Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp (USA)
8905 Precision Electronics, Inc (USA)
245B978H01 Berkshire Transformer (USA)
Related Parts
6670-00-020-1365INTERCHANGEABLE
SCALE,WEIGHING
5120-00-240-5252INTERCHANGEABLE
BIT,SCREWDRIVER
5130-00-240-5252
2920-00-421-7197INTERCHANGEABLE
DRIVE,ENGINE,ELECTRICAL STARTER
J4486601
5310-00-999-1069INTERCHANGEABLE
WASHER
9320-01-137-3572INTERCHANGEABLE
RUBBER ROLLS
8905
4310-01-269-0364INTERCHANGEABLE
VACUUM PUMP UNIT,ROTARY
8905A
7025-01-413-2022INTERCHANGEABLE
DISK DRIVE UNIT
4820-01-418-6511INTERCHANGEABLE
REPAIR KIT,VALVE
8905

Frequently Asked Questions

What is NSN 5950-00-945-0926?

NSN 5950-00-945-0926 is a Transformer,power, manufactured by Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp, classified under FSC 5950 (No Item Name Available). Status: active.

What are the part numbers for NSN 5950-00-945-0926?

NSN 5950-00-945-0926 has 3 cross-referenced part numbers: 245B978H01 (Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp), 8905 (Precision Electronics, Inc), 245B978H01 (Berkshire Transformer).

What NSN replaces 5950-00-945-0926?

There are 8 known substitutes for 5950-00-945-0926: 6670-00-020-1365, 5120-00-240-5252, 2920-00-421-7197 and 5 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 245B978H01?

Key specifications for 245B978H01: Winding Operating Voltage: 90.00 AC VOLTS NOMINAL SINGLE COMPONENT FOURTH SECONDARY; Center to Center Distance Between Mounting Facilities Parallel to Width: 1.750 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN; Center to Center Distance Between Mounting Facilities Parallel to Length: 2.125 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN; Mounting Method: THREADED STUD(S) SINGLE GROUP. 26 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com