PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

A566-181Relay,electromagnetic

L3 Technologies, Inc. Div L3 Keo · NSN 5945-00-894-7042 · FSC 5945 · No Item Name Available
Verified by PartsTable
NSN 5945-00-894-7042 — this item is cataloged by the U.S. Government under National Stock Number 5945-00-894-7042. Primary manufacturer part number: A566-181.
Features
  • Relay,electromagnetic — FSC 5945
  • Frequency in Hertz: 60.0 NOMINAL
  • Duty Type: CONTINUOUS
  • Terminal Type and Quantity: 1 STANDARD TUBE BASE ALL FUNCTIONS
  • Operating Voltage Rating and Type at Specified Temp: 24.0 VOLTS AC 25 DEG CELSIUS SINGLE WINDING
  • Mounting Facility Type and Quantity: 1 PLUG-IN TERMINAL(S) SINGLE MOUNTING FACILITY
  • Nonpile-Up Main Contact Arrangement: 2 POLE, DOUBLE THROW, ONE POSITION MOMENTARY
  • Main Contact Load Current Rating at Maximum Rated Voltage: 3.0 AMPERES AC RESISTIVE LOAD
Applications
  • Circuit control and protection
  • Equipment power management
  • Signal routing
General Description

The Relay,electromagnetic, cataloged under National Stock Number 5945-00-894-7042, 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 L3 Technologies, Inc. Div L3 Keo. Government technical data includes 10 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5945-00-894-7042
Primary Part NumberA566-181
Item NameRelay,electromagnetic
FSC / FSG5945 / 59 — No Item Name Available
ManufacturerL3 Technologies, Inc. Div L3 Keo
StatusACTIVE
Frequency in Hertz60.0 NOMINAL
Duty TypeCONTINUOUS
Terminal Type and Quantity1 STANDARD TUBE BASE ALL FUNCTIONS
Operating Voltage Rating and Type at Specified Temp24.0 VOLTS AC 25 DEG CELSIUS SINGLE WINDING
Mounting Facility Type and Quantity1 PLUG-IN TERMINAL(S) SINGLE MOUNTING FACILITY
Nonpile-Up Main Contact Arrangement2 POLE, DOUBLE THROW, ONE POSITION MOMENTARY
Main Contact Load Current Rating at Maximum Rated Voltage3.0 AMPERES AC RESISTIVE LOAD
Environmental ProtectionDUSTPROOF
Winding Quantity1
Coil Quantity1
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
5310-00-984-704201-0296 ITEM NO 68 INTERCHANGEABLE
Washer,lock
Ward Leonard Ct Llc
5310-01-515-3880MS35338-84 INTERCHANGEABLE
Washer,lock
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
Cross-Reference Index
Part NumberManufacturer
A566-181 PRIMARY L3 Technologies, Inc. Div L3 Keo (USA)
5709-186HPX Airpax Corporation Llc Dba Airpax Corporation Llc (USA)
A566-181PCALL L3 Technologies, Inc. Div L3 Keo (USA)
MS35338-84 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
5310-00-984-7042INTERCHANGEABLE
WASHER,LOCK
01-0296 ITEM NO 68
5310-01-515-3880INTERCHANGEABLE
WASHER,LOCK
MS35338-84

Frequently Asked Questions

What is NSN 5945-00-894-7042?

NSN 5945-00-894-7042 is a Relay,electromagnetic, manufactured by L3 Technologies, Inc. Div L3 Keo, classified under FSC 5945 (No Item Name Available). Status: active.

What are the part numbers for NSN 5945-00-894-7042?

NSN 5945-00-894-7042 has 4 cross-referenced part numbers: A566-181 (L3 Technologies, Inc. Div L3 Keo), 5709-186HPX (Airpax Corporation Llc Dba Airpax Corporation Llc), A566-181PCALL (L3 Technologies, Inc. Div L3 Keo), MS35338-84 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M).

What NSN replaces 5945-00-894-7042?

There are 2 known substitutes for 5945-00-894-7042: 5310-00-984-7042, 5310-01-515-3880. Verify interchangeability with system specifications before substitution.

What are the specifications of A566-181?

Key specifications for A566-181: Frequency in Hertz: 60.0 NOMINAL; Duty Type: CONTINUOUS; Terminal Type and Quantity: 1 STANDARD TUBE BASE ALL FUNCTIONS; Operating Voltage Rating and Type at Specified Temp: 24.0 VOLTS AC 25 DEG CELSIUS SINGLE WINDING. 13 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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