PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

S-1025Transformer,power

Grand Transformers, Inc Dba Texas Transformer · NSN 5950-00-357-8645 · FSC 5950 · No Item Name Available
Verified by PartsTable
NSN 5950-00-357-8645 — this item is cataloged by the U.S. Government under National Stock Number 5950-00-357-8645. Primary manufacturer part number: S-1025.
Features
  • Transformer,power — FSC 5950
  • Terminal Type and Quantity: 4 WIRE LEAD
  • Body Height: 2.188 INCHES NOMINAL IN
  • Distance Between Mounting Facility Centers: 3.125 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
  • Features Provided: COLOR CODED LEAD
  • Mounting Facility Quantity: 2 SINGLE GROUP
  • Winding Operating Current: 112.0 MILLIAMPERES AC NOMINAL SINGLE COMPONENT SINGLE SECONDARY
  • Winding Operating Voltage: 220.00 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE SECONDARY
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Transformer,power, cataloged under National Stock Number 5950-00-357-8645, 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 Grand Transformers, Inc Dba Texas Transformer. Government technical data includes 18 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 4 manufacturers, 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
NSN5950-00-357-8645
Primary Part NumberS-1025
Item NameTransformer,power
FSC / FSG5950 / 59 — No Item Name Available
ManufacturerGrand Transformers, Inc Dba Texas Transformer
StatusACTIVE
Terminal Type and Quantity4 WIRE LEAD
Body Height2.188 INCHES NOMINAL IN
Distance Between Mounting Facility Centers3.125 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Features ProvidedCOLOR CODED LEAD
Mounting Facility Quantity2 SINGLE GROUP
Winding Operating Current112.0 MILLIAMPERES AC NOMINAL SINGLE COMPONENT SINGLE SECONDARY
Winding Operating Voltage220.00 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE SECONDARY
Cooling MethodSELF-COOLED
Input-Output Phase RelationshipSINGLE PHASE TO SINGLE PHASE SINGLE COMPONENT
Mounting MethodFLANGE AND UNTHREADED HOLE(S) SINGLE GROUP
Winding Function and Quantity1 PRIMARY AND 1 SECONDARY SINGLE COMPONENT
Body Width2.250 INCHES NOMINAL IN
Mounting Hole Diameter0.187 INCHES NOMINAL SINGLE GROUP IN
Frequency Rating60.0 HERTZ NOMINAL SINGLE COMPONENT
Maximum Transformer Power Rating25.0 WATTS SINGLE COMPONENT
Winding Operating Voltage440.00 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE PRIMARY
Inclosure TypeFULLY INCLOSED
Reliability IndicatorNOT ESTABLISHED
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 9
6220-00-028-3570S1025 INTERCHANGEABLE
Light,cockpit,aircraft
Soderberg Manufacturing Company, Inc. Dba Soderberg Manufacturing
7530-00-285-29147530-00-285-2914 INTERCHANGEABLE
Jacket,filing,wallet
National Industries for the Blind
4730-00-595-3305444894 INTERCHANGEABLE
Adapter,straight,pipe to Tube
Navistar Intl Corp Truck Br Ohio Plant
4820-00-623-8717N442410058 INTERCHANGEABLE
Disk,valve
Leslie Controls, Inc. Dba Leslie Controls Inc
5961-00-760-0912 INTERCHANGEABLE
Semiconductor Device,diode
5985-00-884-720966021-381 INTERCHANGEABLE
Coupler,directional
Microlab/fxr Llc
4710-01-009-23264424-1 INTERCHANGEABLE
Tube Assembly,metal
Lockheed Martin Corp
1630-01-596-14274-424-1 INTERCHANGEABLE
Torque Tube,widelug
Goodrich Corporation Div Collins Aerospace, Landing Systems (wheels & Brakes)
3920-01-652-251244241 INTERCHANGEABLE
Cart,general Hauling
Hubert Company, Llc Dba Hubert Co Llc
Cross-Reference Index
Part NumberManufacturer
PEI8525 Precision Electronics, Inc (USA)
65S1025 Grand Transformers, Inc Dba Texas Transformer (USA)
S-1025 PRIMARY Grand Transformers, Inc Dba Texas Transformer (USA)
44241 Coast/advanced Chip Magnetics, Inc. (USA)
EXQ002 Therm-Air Mfg Co Inc (USA)
Related Parts
6220-00-028-3570INTERCHANGEABLE
LIGHT,COCKPIT,AIRCRAFT
S1025
7530-00-285-2914INTERCHANGEABLE
JACKET,FILING,WALLET
7530-00-285-2914
4730-00-595-3305INTERCHANGEABLE
ADAPTER,STRAIGHT,PIPE TO TUBE
444894
4820-00-623-8717INTERCHANGEABLE
DISK,VALVE
N442410058
5961-00-760-0912INTERCHANGEABLE
SEMICONDUCTOR DEVICE,DIODE
5985-00-884-7209INTERCHANGEABLE
COUPLER,DIRECTIONAL
66021-381
4710-01-009-2326INTERCHANGEABLE
TUBE ASSEMBLY,METAL
4424-1
1630-01-596-1427INTERCHANGEABLE
TORQUE TUBE,WIDELUG
4-424-1
3920-01-652-2512INTERCHANGEABLE
CART,GENERAL HAULING
44241

Frequently Asked Questions

What is NSN 5950-00-357-8645?

NSN 5950-00-357-8645 is a Transformer,power, manufactured by Grand Transformers, Inc Dba Texas Transformer, classified under FSC 5950 (No Item Name Available). Status: active.

What are the part numbers for NSN 5950-00-357-8645?

NSN 5950-00-357-8645 has 5 cross-referenced part numbers: PEI8525 (Precision Electronics, Inc), 65S1025 (Grand Transformers, Inc Dba Texas Transformer), S-1025 (Grand Transformers, Inc Dba Texas Transformer), 44241 (Coast/advanced Chip Magnetics, Inc.), EXQ002 (Therm-Air Mfg Co Inc).

What NSN replaces 5950-00-357-8645?

There are 9 known substitutes for 5950-00-357-8645: 6220-00-028-3570, 7530-00-285-2914, 4730-00-595-3305 and 6 more. Verify interchangeability with system specifications before substitution.

What are the specifications of S-1025?

Key specifications for S-1025: Terminal Type and Quantity: 4 WIRE LEAD; Body Height: 2.188 INCHES NOMINAL IN; Distance Between Mounting Facility Centers: 3.125 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN; Features Provided: COLOR CODED LEAD. 19 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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