PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

101901Transformer,power

Marine Electric Systems Inc · NSN 5950-01-057-3238 · FSC 5950 · No Item Name Available
Verified by PartsTable
NSN 5950-01-057-3238 — this item is cataloged by the U.S. Government under National Stock Number 5950-01-057-3238. Primary manufacturer part number: 101901.
Features
  • Transformer,power — FSC 5950
  • Reliability Indicator: NOT ESTABLISHED
  • Mounting Facility Quantity: 4 SINGLE GROUP
  • Inclosure Type: FULLY INCLOSED
  • Center to Center Distance Between Mounting Facilities Parallel to Length: 1.875 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
  • Mounting Method: UNTHREADED HOLE(S) SINGLE GROUP
  • Winding Function and Quantity: 3 PRIMARY AND 3 SECONDARY SINGLE COMPONENT
  • Winding Operating Current: 0.020 AMPERES AC MAXIMUM SINGLE COMPONENT ALL SECONDARY
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Transformer,power, cataloged under National Stock Number 5950-01-057-3238, 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 Marine Electric Systems Inc. Government technical data includes 18 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. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5950-01-057-3238
Primary Part Number101901
Item NameTransformer,power
FSC / FSG5950 / 59 — No Item Name Available
ManufacturerMarine Electric Systems Inc
StatusACTIVE
Reliability IndicatorNOT ESTABLISHED
Mounting Facility Quantity4 SINGLE GROUP
Inclosure TypeFULLY INCLOSED
Center to Center Distance Between Mounting Facilities Parallel to Length1.875 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Mounting MethodUNTHREADED HOLE(S) SINGLE GROUP
Winding Function and Quantity3 PRIMARY AND 3 SECONDARY SINGLE COMPONENT
Winding Operating Current0.020 AMPERES AC MAXIMUM SINGLE COMPONENT ALL SECONDARY
Terminal Type and Quantity15 TAB, SOLDER LUG
Body Length3.375 INCHES NOMINAL IN
Body Height2.750 INCHES NOMINAL IN
Center to Center Distance Between Mounting Facilities Parallel to Width1.125 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Winding Operating Current0.002 AMPERES AC MAXIMUM SINGLE COMPONENT ALL PRIMARY
Winding Operating Voltage42.00 AC VOLTS NOMINAL SINGLE COMPONENT ALL SECONDARY
Body Width2.750 INCHES NOMINAL IN
Winding Operating Voltage440.00 AC VOLTS NOMINAL SINGLE COMPONENT ALL PRIMARY
Input-Output Phase RelationshipSINGLE PHASE TO SINGLE PHASE SINGLE COMPONENT
Mounting Hole Diameter0.219 INCHES NOMINAL SINGLE GROUP IN
Frequency Rating60.0 HERTZ NOMINAL SINGLE COMPONENT
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 10
5945-00-003-7809806271 INTERCHANGEABLE
Relay,reed
North Atlantic Industries, Inc. Dba North Atlantic Industries
5355-00-045-52512420-1400G3 INTERCHANGEABLE
Knob
Raytheon Co Equipment Development Lab
5330-00-291-69648329828 INTERCHANGEABLE
Gasket Assembly
U S Army Tank Automotive Command Amsta-Im-Mm
5360-00-933-0753101901 INTERCHANGEABLE
Spring,helical,compression
Marotta Controls Inc
2990-00-991-3657101901 INTERCHANGEABLE
Muffler,exhaust
Arvin Industries Inc
5970-01-028-6332101901 INTERCHANGEABLE
Insulator,washer
Transistor Devices Inc Div Astrodyne Tdi High Power Business Unit
5360-01-051-2248 INTERCHANGEABLE
Spring,helical,compression
5315-01-067-3279101901 INTERCHANGEABLE
Pin,cotter
Mcculloch Corp
4730-01-332-9904101901 INTERCHANGEABLE
Strainer Element,sediment
Little Giant Pump Co
4810-01-416-8180101901 INTERCHANGEABLE
Valve,solenoid
Coffin Turbo Pump Inc
Cross-Reference Index
Part NumberManufacturer
101901 PRIMARY Marine Electric Systems Inc (USA)
806271 Marine Electric Systems Inc (USA)
Related Parts
5945-00-003-7809INTERCHANGEABLE
RELAY,REED
806271
5355-00-045-5251INTERCHANGEABLE
KNOB
2420-1400G3
5330-00-291-6964INTERCHANGEABLE
GASKET ASSEMBLY
8329828
5360-00-933-0753INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
101901
2990-00-991-3657INTERCHANGEABLE
MUFFLER,EXHAUST
101901
5970-01-028-6332INTERCHANGEABLE
INSULATOR,WASHER
101901
5360-01-051-2248INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
5315-01-067-3279INTERCHANGEABLE
PIN,COTTER
101901
4730-01-332-9904INTERCHANGEABLE
STRAINER ELEMENT,SEDIMENT
101901
4810-01-416-8180INTERCHANGEABLE
VALVE,SOLENOID
101901

Frequently Asked Questions

What is NSN 5950-01-057-3238?

NSN 5950-01-057-3238 is a Transformer,power, manufactured by Marine Electric Systems Inc, classified under FSC 5950 (No Item Name Available). Status: active.

What are the part numbers for NSN 5950-01-057-3238?

NSN 5950-01-057-3238 has 2 cross-referenced part numbers: 101901 (Marine Electric Systems Inc), 806271 (Marine Electric Systems Inc).

What NSN replaces 5950-01-057-3238?

There are 10 known substitutes for 5950-01-057-3238: 5945-00-003-7809, 5355-00-045-5251, 5330-00-291-6964 and 7 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 101901?

Key specifications for 101901: Reliability Indicator: NOT ESTABLISHED; Mounting Facility Quantity: 4 SINGLE GROUP; Inclosure Type: FULLY INCLOSED; Center to Center Distance Between Mounting Facilities Parallel to Length: 1.875 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN. 18 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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