PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

1676557Relay,electromagnetic

Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier · NSN 5945-00-686-7243 · FSC 5945 · No Item Name Available
Verified by PartsTable
NSN 5945-00-686-7243 — this item is cataloged by the U.S. Government under National Stock Number 5945-00-686-7243. Primary manufacturer part number: 1676557.
Features
  • Relay,electromagnetic — FSC 5945
  • Mounting Facility Type and Quantity: 4 THREADED HOLE(S) SINGLE MOUNTING FACILITY
  • Main Contact Maximum Voltage Rating in Volts: 115.0 AC
  • Nonpile-Up Main Contact Arrangement: 1 POLE, DOUBLE THROW, ONE POSITION MOMENTARY
  • Winding DC Resistance Rating: 64.0 OHMS NOMINAL SINGLE WINDING
  • Frequency in Hertz: 60.0 NOMINAL
  • Coil Quantity: 1
  • Main Contact Load Current Rating at Maximum Rated Voltage: 15.0 AMPERES AC RESISTIVE LOAD
Applications
  • Circuit control and protection
  • Equipment power management
  • Signal routing
General Description

The Relay,electromagnetic, cataloged under National Stock Number 5945-00-686-7243, 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 Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier. Government technical data includes 19 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 2 manufacturers, 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
NSN5945-00-686-7243
Primary Part Number1676557
Item NameRelay,electromagnetic
FSC / FSG5945 / 59 — No Item Name Available
ManufacturerNavair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
StatusACTIVE
Mounting Facility Type and Quantity4 THREADED HOLE(S) SINGLE MOUNTING FACILITY
Main Contact Maximum Voltage Rating in Volts115.0 AC
Nonpile-Up Main Contact Arrangement1 POLE, DOUBLE THROW, ONE POSITION MOMENTARY
Winding DC Resistance Rating64.0 OHMS NOMINAL SINGLE WINDING
Frequency in Hertz60.0 NOMINAL
Coil Quantity1
Main Contact Load Current Rating at Maximum Rated Voltage15.0 AMPERES AC RESISTIVE LOAD
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC) SINGLE MOUNTING FACILITY
Operating Voltage Rating and Type at Specified Temp110.0 VOLTS AC 25 DEG CELSIUS SINGLE WINDING
Terminal Type and Quantity5 PIN ALL FUNCTIONS
Mounting Facility PatternRECTANGULAR SINGLE MOUNTING FACILITY
Time Delay0.02 SECONDS NOMINAL FIXED RELEASE TIME
Nominal Thread Size0.164 INCHES SINGLE MOUNTING FACILITY IN
Winding Quantity1
Duty TypeCONTINUOUS
Time Delay0.20 SECONDS MINIMUM AND 30.00 SECONDS MAXIMUM ADJUSTABLE OPERATE TIME
Center to Center Distance Between Mounting Facilities Parallel to Length1.750 INCHES NOMINAL SINGLE MOUNTING FACILITY IN
Thread Class2B SINGLE MOUNTING FACILITY
Center to Center Distance Between Mounting Facilities Parallel to Width0.500 INCHES NOMINAL SINGLE MOUNTING FACILITY IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
5945-00-133-91121-1423158-8 INTERCHANGEABLE
Relay,electromagnetic
Te Connectivity Corporation Dba Tyco Electronics Corporation Div Deutsch Products
5945-00-208-4123253085-2 INTERCHANGEABLE
Relay,electromagnetic
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
5945-00-220-35372412L8CN INTERCHANGEABLE
Relay,electromagnetic
Te Connectivity Corporation
5945-00-455-84697022L8DN INTERCHANGEABLE
Relay,electromagnetic
Te Connectivity Corporation
5945-00-785-32642422L9CN INTERCHANGEABLE
Relay,electromagnetic
Te Connectivity Corporation
5945-00-929-38542530851PC14 INTERCHANGEABLE
Relay,electromagnetic
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
Cross-Reference Index
Part NumberManufacturer
2496A1 Te Connectivity Corporation (USA)
1676557 PRIMARY Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA)
2412L8DN Te Connectivity Corporation (USA)
Related Parts
5945-00-133-9112INTERCHANGEABLE
RELAY,ELECTROMAGNETIC
1-1423158-8
5945-00-208-4123INTERCHANGEABLE
RELAY,ELECTROMAGNETIC
253085-2
5945-00-220-3537INTERCHANGEABLE
RELAY,ELECTROMAGNETIC
2412L8CN
5945-00-455-8469INTERCHANGEABLE
RELAY,ELECTROMAGNETIC
7022L8DN
5945-00-785-3264INTERCHANGEABLE
RELAY,ELECTROMAGNETIC
2422L9CN
5945-00-929-3854INTERCHANGEABLE
RELAY,ELECTROMAGNETIC
2530851PC14

Frequently Asked Questions

What is NSN 5945-00-686-7243?

NSN 5945-00-686-7243 is a Relay,electromagnetic, manufactured by Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier, classified under FSC 5945 (No Item Name Available). Status: active.

What are the part numbers for NSN 5945-00-686-7243?

NSN 5945-00-686-7243 has 3 cross-referenced part numbers: 2496A1 (Te Connectivity Corporation), 1676557 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier), 2412L8DN (Te Connectivity Corporation).

What NSN replaces 5945-00-686-7243?

There are 6 known substitutes for 5945-00-686-7243: 5945-00-133-9112, 5945-00-208-4123, 5945-00-220-3537 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 1676557?

Key specifications for 1676557: Overall Length: 4.500 INCHES NOMINAL IN; Mounting Facility Type and Quantity: 4 THREADED HOLE(S) SINGLE MOUNTING FACILITY; Main Contact Maximum Voltage Rating in Volts: 115.0 AC; Nonpile-Up Main Contact Arrangement: 1 POLE, DOUBLE THROW, ONE POSITION MOMENTARY. 22 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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