PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

276-0026-010Transformer,power

Rockwell Collins, Inc. Div Collins Aerospace - Mission Systems · NSN 5950-01-377-0121 · FSC 5950 · No Item Name Available
Verified by PartsTable
NSN 5950-01-377-0121 — this item is cataloged by the U.S. Government under National Stock Number 5950-01-377-0121. Primary manufacturer part number: 276-0026-010.
Features
  • Transformer,power — FSC 5950
  • Reliability Indicator: NOT ESTABLISHED
  • Inclosure Type: OPEN
  • Center to Center Distance Between Mounting Facilities Parallel to Width: 1.550 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
  • Terminal Type and Quantity: 13 TAB, SOLDER LUG
  • Input-Output Phase Relationship: THREE PHASE TO THREE PHASE SINGLE COMPONENT
  • Winding Operating Voltage: 173.00 AC VOLTS MINIMUM AND 216.50 AC VOLTS MAXIMUM SINGLE COMPONENT SINGLE PRIMARY
  • Transformer Winding Connection Type: DELTA-DELTA AND DELTA-WYE
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Transformer,power, cataloged under National Stock Number 5950-01-377-0121, 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 Rockwell Collins, Inc. Div Collins Aerospace - Mission Systems. Government technical data includes 17 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 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
NSN5950-01-377-0121
Primary Part Number276-0026-010
Item NameTransformer,power
FSC / FSG5950 / 59 — No Item Name Available
ManufacturerRockwell Collins, Inc. Div Collins Aerospace - Mission Systems
StatusACTIVE
Reliability IndicatorNOT ESTABLISHED
Inclosure TypeOPEN
Center to Center Distance Between Mounting Facilities Parallel to Width1.550 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Terminal Type and Quantity13 TAB, SOLDER LUG
Input-Output Phase RelationshipTHREE PHASE TO THREE PHASE SINGLE COMPONENT
Winding Operating Voltage173.00 AC VOLTS MINIMUM AND 216.50 AC VOLTS MAXIMUM SINGLE COMPONENT SINGLE PRIMARY
Transformer Winding Connection TypeDELTA-DELTA AND DELTA-WYE
Nominal Thread Size0.112 INCHES SINGLE GROUP IN
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC) SINGLE GROUP
Center to Center Distance Between Mounting Facilities Parallel to Length2.200 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Winding Function and Quantity1 PRIMARY AND 3 SECONDARY SINGLE COMPONENT
Winding Shielding MethodINTERNAL SHIELD GROUNDED TO CORE AND MOUNTING SINGLE COMPONENT
Mounting Facility Quantity4 SINGLE GROUP
Frequency Rating400.0 HERTZ NOMINAL SINGLE COMPONENT
Test Data Document95105-276-0026 DRAWING (THIS IS THE BASIC GOVERNING DRAWING, SUCH AS A CONTRACTOR DRAWING, ORIGINAL EQUIPMENT MANUFACTURER DRAWING, ETC.; EXCLUDES ANY SPECIFICATION, STANDARD OR OTHER DOCUMENT THAT MAY BE REFERENCED IN A BASIC GOVERNING DRAWING)
Maximum Operating Temp140.0 CELSIUS DEGC
Mounting MethodTHREADED HOLE(S) SINGLE GROUP
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 8
5133-00-189-9285 INTERCHANGEABLE
Drill,twist
5340-00-522-236944-1-1-0 INTERCHANGEABLE
Fastener,casement
Southco Inc
5940-00-983-6087 INTERCHANGEABLE
Terminal Board
7530-01-124-56607530-01-124-5660 INTERCHANGEABLE
Pad,writing Paper
National Industries for the Blind
4520-01-159-1659HSU-1200-JU10 INTERCHANGEABLE
Hydro Test Pump-Val
Ge Steam Power Inc Dba Ge Steam Power, Inc Div General Electric
5305-01-394-0423A3145443 INTERCHANGEABLE
Thumbscrew
Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
5140-01-408-3841J44110 INTERCHANGEABLE
Cabinet,tool,mobile
The Stanley Works Dba Stanley Proto
7920-01-617-245326498 INTERCHANGEABLE
Brush,wire,tube
Precision Brush Co
Cross-Reference Index
Part NumberManufacturer
276-0026-010 PRIMARY Rockwell Collins, Inc. Div Collins Aerospace - Mission Systems (USA)
44110 Freed Transformer Co (USA)
Related Parts
5133-00-189-9285INTERCHANGEABLE
DRILL,TWIST
5340-00-522-2369INTERCHANGEABLE
FASTENER,CASEMENT
44-1-1-0
5940-00-983-6087INTERCHANGEABLE
TERMINAL BOARD
7530-01-124-5660INTERCHANGEABLE
PAD,WRITING PAPER
7530-01-124-5660
4520-01-159-1659INTERCHANGEABLE
HYDRO TEST PUMP-VAL
HSU-1200-JU10
5305-01-394-0423INTERCHANGEABLE
THUMBSCREW
A3145443
5140-01-408-3841INTERCHANGEABLE
CABINET,TOOL,MOBILE
J44110
7920-01-617-2453INTERCHANGEABLE
BRUSH,WIRE,TUBE
26498

Frequently Asked Questions

What is NSN 5950-01-377-0121?

NSN 5950-01-377-0121 is a Transformer,power, manufactured by Rockwell Collins, Inc. Div Collins Aerospace - Mission Systems, classified under FSC 5950 (No Item Name Available). Status: active.

What are the part numbers for NSN 5950-01-377-0121?

NSN 5950-01-377-0121 has 2 cross-referenced part numbers: 276-0026-010 (Rockwell Collins, Inc. Div Collins Aerospace - Mission Systems), 44110 (Freed Transformer Co).

What NSN replaces 5950-01-377-0121?

There are 8 known substitutes for 5950-01-377-0121: 5133-00-189-9285, 5340-00-522-2369, 5940-00-983-6087 and 5 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 276-0026-010?

Key specifications for 276-0026-010: Overall Length: 3.040 INCHES MAXIMUM IN; Reliability Indicator: NOT ESTABLISHED; Inclosure Type: OPEN; Overall Width: 2.160 INCHES MAXIMUM IN. 20 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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