PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

56-78Transformer,power

General Dynamics Ots (aerospace), Inc. Dba General Dynamics Ordinance and Tactical Systems Div Seattle Operations · NSN 5950-01-011-9264 · FSC 5950 · No Item Name Available
Verified by PartsTable
NSN 5950-01-011-9264 — this item is cataloged by the U.S. Government under National Stock Number 5950-01-011-9264. Primary manufacturer part number: 56-78.
Features
  • Transformer,power — FSC 5950
  • Reliability Indicator: NOT ESTABLISHED
  • Winding Operating Voltage: 110.00 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE PRIMARY
  • Winding Operating Current: 223.0 MILLIAMPERES AC MAXIMUM SINGLE COMPONENT SINGLE PRIMARY
  • Inclosure Type: OPEN
  • Frequency Rating: 400.0 HERTZ NOMINAL SINGLE COMPONENT
  • Input-Output Phase Relationship: SINGLE PHASE TO SINGLE PHASE SINGLE COMPONENT
  • Mounting Hole Diameter: 0.188 INCHES NOMINAL SINGLE GROUP IN
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Transformer,power, cataloged under National Stock Number 5950-01-011-9264, 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 General Dynamics Ots (aerospace), Inc. Dba General Dynamics Ordinance and Tactical Systems Div Seattle Operations. Government technical data includes 17 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. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5950-01-011-9264
Primary Part Number56-78
Item NameTransformer,power
FSC / FSG5950 / 59 — No Item Name Available
ManufacturerGeneral Dynamics Ots (aerospace), Inc. Dba General Dynamics Ordinance and Tactical Systems Div Seattle Operations
StatusACTIVE
Reliability IndicatorNOT ESTABLISHED
Winding Operating Voltage110.00 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE PRIMARY
Winding Operating Current223.0 MILLIAMPERES AC MAXIMUM SINGLE COMPONENT SINGLE PRIMARY
Inclosure TypeOPEN
Frequency Rating400.0 HERTZ NOMINAL SINGLE COMPONENT
Input-Output Phase RelationshipSINGLE PHASE TO SINGLE PHASE SINGLE COMPONENT
Mounting Hole Diameter0.188 INCHES NOMINAL SINGLE GROUP IN
Winding Operating Voltage70.00 AC VOLTS NOMINAL SINGLE COMPONENT SECOND SECONDARY
Body Length3.000 INCHES NOMINAL IN
Mounting Facility Quantity2 SINGLE GROUP
Mounting MethodFLANGE AND UNTHREADED HOLE(S) SINGLE GROUP
Winding Function and Quantity1 PRIMARY AND 2 SECONDARY SINGLE COMPONENT
Distance Between Mounting Facility Centers2.500 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Body Height1.750 INCHES NOMINAL IN
Body Width2.700 INCHES MAXIMUM IN
Terminal Type and Quantity8 WIRE LEAD
Winding Operating Voltage19.20 AC VOLTS NOMINAL SINGLE COMPONENT FIRST SECONDARY
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
5960-00-230-5262 INTERCHANGEABLE
Electron Tube
5360-00-246-76124908512-9 INTERCHANGEABLE
Spring,helical,compression
Kalmar AC Inc
2910-00-287-1912 INTERCHANGEABLE
Filter Element,fluid
5935-00-615-15245678 INTERCHANGEABLE
Connector,receptacle,electrical
Hubbell Incorporated (delaware) Dba Wiring Device-Kellems Division
4330-01-618-9963 INTERCHANGEABLE
Filter Assembly,fluid
4820-01-655-26805678 INTERCHANGEABLE
Valve,safety Relief
Lincoln Industrial Corporation Div Lincoln Industrial Corporation
Cross-Reference Index
Part NumberManufacturer
56-78-1 General Dynamics Ots (aerospace), Inc. Dba General Dynamics Ordinance and Tactical Systems Div Seattle Operations (USA)
56-78 PRIMARY General Dynamics Ots (aerospace), Inc. Dba General Dynamics Ordinance and Tactical Systems Div Seattle Operations (USA)
Related Parts
5960-00-230-5262INTERCHANGEABLE
ELECTRON TUBE
5360-00-246-7612INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
4908512-9
2910-00-287-1912INTERCHANGEABLE
FILTER ELEMENT,FLUID
5935-00-615-1524INTERCHANGEABLE
CONNECTOR,RECEPTACLE,ELECTRICAL
5678
4330-01-618-9963INTERCHANGEABLE
FILTER ASSEMBLY,FLUID
4820-01-655-2680INTERCHANGEABLE
VALVE,SAFETY RELIEF
5678

Frequently Asked Questions

What is NSN 5950-01-011-9264?

NSN 5950-01-011-9264 is a Transformer,power, manufactured by General Dynamics Ots (aerospace), Inc. Dba General Dynamics Ordinance and Tactical Systems Div Seattle Operations, classified under FSC 5950 (No Item Name Available). Status: active.

What are the part numbers for NSN 5950-01-011-9264?

NSN 5950-01-011-9264 has 2 cross-referenced part numbers: 56-78-1 (General Dynamics Ots (aerospace), Inc. Dba General Dynamics Ordinance and Tactical Systems Div Seattle Operations), 56-78 (General Dynamics Ots (aerospace), Inc. Dba General Dynamics Ordinance and Tactical Systems Div Seattle Operations).

What NSN replaces 5950-01-011-9264?

There are 6 known substitutes for 5950-01-011-9264: 5960-00-230-5262, 5360-00-246-7612, 2910-00-287-1912 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 56-78?

Key specifications for 56-78: Reliability Indicator: NOT ESTABLISHED; Winding Operating Voltage: 110.00 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE PRIMARY; Winding Operating Current: 223.0 MILLIAMPERES AC MAXIMUM SINGLE COMPONENT SINGLE PRIMARY; Inclosure Type: OPEN. 17 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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