PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

54191Relay Assembly

Ecu Corp Div Ecu Corporation · NSN 5945-01-661-5437 · FSC 5945 · No Item Name Available
Verified by PartsTable
NSN 5945-01-661-5437 — this item is cataloged by the U.S. Government under National Stock Number 5945-01-661-5437. Primary manufacturer part number: 54191.
Features
  • Relay Assembly — FSC 5945
  • 1 verified cross-reference
  • Primary manufacturer: Ecu Corp Div Ecu Corporation
Applications
  • Circuit control and protection
  • Equipment power management
  • Signal routing
General Description

The Relay Assembly, cataloged under National Stock Number 5945-01-661-5437, is classified within Federal Supply Class 5945 (No Item Name Available) of the Electrical and Electronic Equipment Components group. The primary manufacturer of record is Ecu Corp Div Ecu Corporation. This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameRelay Assembly
FSC / FSG5945 — No Item Name Available (FSG 59)
ManufacturersEcu Corp Div Ecu Corporation (CAGE 4GFH0)
Technical Specifications
ParameterValue
NSN5945-01-661-5437
Primary Part Number54191
Item NameRelay Assembly
FSC / FSG5945 / 59 — No Item Name Available
ManufacturerEcu Corp Div Ecu Corporation
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
5962-00-311-1064389348-1 INTERCHANGEABLE
Microcircuit,digital
L3harris Technologies, Inc. Dba Harris Corp Div Antenna Products
5935-00-819-75335419-1 INTERCHANGEABLE
Adapter,connector
Microwave Devices Inc
5962-01-070-6595 INTERCHANGEABLE
Microcircuit,digital
5340-01-241-6256L100124-073.1 INTERCHANGEABLE
Cover,access
Oshkosh Aerotech, Llc Div Jetway Systems
Cross-Reference Index
Part NumberManufacturer
54191 PRIMARY Ecu Corp Div Ecu Corporation (USA)
Related Parts
5962-00-311-1064INTERCHANGEABLE
MICROCIRCUIT,DIGITAL
389348-1
5935-00-819-7533INTERCHANGEABLE
ADAPTER,CONNECTOR
5419-1
5962-01-070-6595INTERCHANGEABLE
MICROCIRCUIT,DIGITAL
5340-01-241-6256INTERCHANGEABLE
COVER,ACCESS
L100124-073.1

Frequently Asked Questions

What is NSN 5945-01-661-5437?

NSN 5945-01-661-5437 is a Relay Assembly, manufactured by Ecu Corp Div Ecu Corporation, classified under FSC 5945 (No Item Name Available). Status: active.

What are the part numbers for NSN 5945-01-661-5437?

NSN 5945-01-661-5437 has 1 cross-referenced part number: 54191 (Ecu Corp Div Ecu Corporation).

What NSN replaces 5945-01-661-5437?

There are 4 known substitutes for 5945-01-661-5437: 5962-00-311-1064, 5935-00-819-7533, 5962-01-070-6595 and 1 more. Verify interchangeability with system specifications before substitution.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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