PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

21026Transformer,power

Trio Laboratories Inc · NSN 5950-00-869-4812 · FSC 5950 · No Item Name Available
Verified by PartsTable
NSN 5950-00-869-4812 — this item is cataloged by the U.S. Government under National Stock Number 5950-00-869-4812. Primary manufacturer part number: 21026.
Features
  • Transformer,power — FSC 5950
  • Center to Center Distance Between Mounting Facilities Parallel to Width: 2.250 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
  • Reliability Indicator: NOT ESTABLISHED
  • Input-Output Phase Relationship: THREE PHASE TO THREE PHASE AND THREE PHASE TO SINGLE PHASE SINGLE COMPONENT
  • Transformer Winding Connection Type: DELTA-WYE
  • Winding Operating Current: 280.0 MILLIAMPERES AC MAXIMUM SINGLE COMPONENT FOURTH SECONDARY
  • Winding Operating Voltage: 120.00 AC VOLTS NOMINAL OR 208.00 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE PRIMARY
  • Winding Function and Quantity: 1 PRIMARY AND 13 SECONDARY 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 5950-00-869-4812, 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 Trio Laboratories Inc. Government technical data includes 26 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. 11 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5950-00-869-4812
Primary Part Number21026
Item NameTransformer,power
FSC / FSG5950 / 59 — No Item Name Available
ManufacturerTrio Laboratories Inc
StatusACTIVE
Center to Center Distance Between Mounting Facilities Parallel to Width2.250 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Reliability IndicatorNOT ESTABLISHED
Input-Output Phase RelationshipTHREE PHASE TO THREE PHASE AND THREE PHASE TO SINGLE PHASE SINGLE COMPONENT
Transformer Winding Connection TypeDELTA-WYE
Winding Operating Current280.0 MILLIAMPERES AC MAXIMUM SINGLE COMPONENT FOURTH SECONDARY
Winding Operating Voltage120.00 AC VOLTS NOMINAL OR 208.00 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE PRIMARY
Winding Function and Quantity1 PRIMARY AND 13 SECONDARY SINGLE COMPONENT
Body Height2.900 INCHES NOMINAL IN
Winding Operating Voltage33.00 AC VOLTS NOMINAL SINGLE COMPONENT FIRST SECONDARY
Winding Operating Current450.0 MILLIAMPERES AC MAXIMUM SINGLE COMPONENT SECOND SECONDARY
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC) SINGLE GROUP
Mounting MethodTHREADED HOLE(S) SINGLE GROUP
Winding Operating Voltage99.00 AC VOLTS NOMINAL SINGLE COMPONENT THIRD SECONDARY
Winding Operating Voltage6.60 AC VOLTS NOMINAL SINGLE COMPONENT SECOND SECONDARY
Frequency Rating400.0 HERTZ NOMINAL SINGLE COMPONENT
Winding Operating Current2.0 AMPERES AC MAXIMUM SINGLE COMPONENT FIRST SECONDARY
Winding Operating Voltage6.60 AC VOLTS NOMINAL SINGLE COMPONENT FOURTH SECONDARY
Center to Center Distance Between Mounting Facilities Parallel to Length3.500 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Body Length4.100 INCHES NOMINAL IN
Nominal Thread Size0.164 INCHES SINGLE GROUP IN
Mounting Facility Quantity4 SINGLE GROUP
Maximum Operating Temp122.0 CELSIUS DEGC
Terminal Type and Quantity50 TAB, SOLDER LUG
Winding Operating Current4.5 AMPERES AC MAXIMUM SINGLE COMPONENT THIRD SECONDARY
Inclosure TypeFULLY INCLOSED
Body Width3.230 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 11
5940-00-156-7345 INTERCHANGEABLE
Terminal,lug
6145-00-161-0913 INTERCHANGEABLE
Cable,radio Frequency
5999-00-503-2002N11 INTERCHANGEABLE
Heater,thermal Release
Rockwell Automation, Inc. Dba Rockwell Automation
5330-00-551-9306 INTERCHANGEABLE
Gasket
5999-01-017-107621026 INTERCHANGEABLE
Contactor,air Condi
Noske-Kaeser Germany Gmbh
5930-01-073-3412 INTERCHANGEABLE
Switch,toggle
5340-01-095-375721026 INTERCHANGEABLE
Panel,rear,intermed
Smiths Aerospace, Inc., Electronic Systems-Grand Rapids
5305-01-126-7128 INTERCHANGEABLE
Screw,machine
5360-01-318-22622-1026 INTERCHANGEABLE
Spring,helical,compression
Malabar
5970-01-388-643221026 INTERCHANGEABLE
Cover,insulator,spe
Science Applications International Corporation
Cross-Reference Index
Part NumberManufacturer
21026 Trio Laboratories Inc (USA)
Related Parts
5940-00-156-7345INTERCHANGEABLE
TERMINAL,LUG
6145-00-161-0913INTERCHANGEABLE
CABLE,RADIO FREQUENCY
5999-00-503-2002INTERCHANGEABLE
HEATER,THERMAL RELEASE
N11
5330-00-551-9306INTERCHANGEABLE
GASKET
5999-01-017-1076INTERCHANGEABLE
CONTACTOR,AIR CONDI
21026
5930-01-073-3412INTERCHANGEABLE
SWITCH,TOGGLE
5340-01-095-3757INTERCHANGEABLE
PANEL,REAR,INTERMED
21026
5305-01-126-7128INTERCHANGEABLE
SCREW,MACHINE
5360-01-318-2262INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
2-1026
5970-01-388-6432INTERCHANGEABLE
COVER,INSULATOR,SPE
21026
3110-01-553-0555INTERCHANGEABLE
BEARING,BALL,ANNULAR

Frequently Asked Questions

What is NSN 5950-00-869-4812?

NSN 5950-00-869-4812 is a Transformer,power, manufactured by Trio Laboratories Inc, classified under FSC 5950 (No Item Name Available). Status: active.

What are the part numbers for NSN 5950-00-869-4812?

NSN 5950-00-869-4812 has 1 cross-referenced part number: 21026 (Trio Laboratories Inc).

What NSN replaces 5950-00-869-4812?

There are 11 known substitutes for 5950-00-869-4812: 5940-00-156-7345, 6145-00-161-0913, 5999-00-503-2002 and 8 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 21026?

Key specifications for 21026: Center to Center Distance Between Mounting Facilities Parallel to Width: 2.250 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN; Reliability Indicator: NOT ESTABLISHED; Input-Output Phase Relationship: THREE PHASE TO THREE PHASE AND THREE PHASE TO SINGLE PHASE SINGLE COMPONENT; Transformer Winding Connection Type: DELTA-WYE. 27 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