PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

B347ARelay,electromagnetic

Te Connectivity Corporation · NSN 5945-00-508-1808 · FSC 5945 · No Item Name Available
Verified by PartsTable
NSN 5945-00-508-1808 — this item is cataloged by the U.S. Government under National Stock Number 5945-00-508-1808. Primary manufacturer part number: B347A.
Features
  • Relay,electromagnetic — FSC 5945
  • Auxiliary Contact Load Current Rating at Maximum Rated Voltage: 5.0 AMPERES AC AND 5.0 AMPERES DC RESISTIVE LOAD
  • Terminal Type and Quantity: 19 THREADED STUD ALL FUNCTIONS
  • Features Provided: COIL VOLTAGE SUPPRESSION AND POLARIZED
  • Center to Center Distance Between Mounting Facilities Parallel to Width: 2.000 INCHES NOMINAL SINGLE MOUNTING FACILITY IN
  • Winding Quantity: 1
  • Unthreaded Mounting Hole Diameter: 0.182 INCHES MINIMUM AND 0.197 INCHES MAXIMUM SINGLE MOUNTING FACILITY IN
  • Mounting Facility Type and Quantity: 4 UNTHREADED HOLE(S) SINGLE MOUNTING FACILITY
Applications
  • Circuit control and protection
  • Equipment power management
  • Signal routing
General Description

The Relay,electromagnetic, cataloged under National Stock Number 5945-00-508-1808, 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 Te Connectivity Corporation. Government technical data includes 22 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5945-00-508-1808
Primary Part NumberB347A
Item NameRelay,electromagnetic
FSC / FSG5945 / 59 — No Item Name Available
ManufacturerTe Connectivity Corporation
StatusACTIVE
Auxiliary Contact Load Current Rating at Maximum Rated Voltage5.0 AMPERES AC AND 5.0 AMPERES DC RESISTIVE LOAD
Terminal Type and Quantity19 THREADED STUD ALL FUNCTIONS
Features ProvidedCOIL VOLTAGE SUPPRESSION AND POLARIZED
Center to Center Distance Between Mounting Facilities Parallel to Width2.000 INCHES NOMINAL SINGLE MOUNTING FACILITY IN
Winding Quantity1
Unthreaded Mounting Hole Diameter0.182 INCHES MINIMUM AND 0.197 INCHES MAXIMUM SINGLE MOUNTING FACILITY IN
Mounting Facility Type and Quantity4 UNTHREADED HOLE(S) SINGLE MOUNTING FACILITY
Duty TypeCONTINUOUS
Coil Quantity1
Center to Center Distance Between Mounting Facilities Parallel to Length2.730 INCHES NOMINAL SINGLE MOUNTING FACILITY IN
Time Delay0.01 SECONDS MAXIMUM FIXED RELEASE TIME
Mounting Facility PatternRECTANGULAR SINGLE MOUNTING FACILITY
Time Delay0.02 SECONDS MAXIMUM FIXED OPERATE TIME
Operating Voltage Rating and Type at Specified Temp28.0 VOLTS DC 25 DEG CELSIUS SINGLE WINDING
Main Contact Maximum Voltage Rating in Volts200.0 AC
Auxiliary Contact Maximum Voltage Rating in Volts115.0 AC AND 28.0 DC
Environmental ProtectionSHOCK PROOF AND VIBRATION PROOF
Nonpile-Up Auxiliary Contact Arrangement2 POLE, DOUBLE THROW, ONE POSITION MOMENTARY AND 1 POLE, SINGLE THROW, NORMALLY OPEN, MOMENTARY ACTION
Main Contact Load Current Rating at Maximum Rated Voltage25.0 AMPERES AC RESISTIVE LOAD
FSC Application DataELECTRICAL SYSTEM,AIRCRAFT
Nonpile-Up Main Contact Arrangement3 POLE, DOUBLE THROW, ONE POSITION MOMENTARY
Auxiliary Contact Load Current Rating at Maximum Rated Voltage1.0 AMPERES AC AND 1.0 AMPERES DC LAMP LOAD
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
8455-01-388-8092 INTERCHANGEABLE
Insignia,grade,enlisted Personne
8455-01-388-9536 INTERCHANGEABLE
Insignia,grade,enlisted Personne
8455-01-553-1305 INTERCHANGEABLE
Insignia,shoulder Sleeve
8455-01-553-1514 INTERCHANGEABLE
Insignia,shoulder Sleeve
Cross-Reference Index
Part NumberManufacturer
673116-103 Lockheed Martin Corp (USA)
B347A PRIMARY Te Connectivity Corporation (USA)
G-1093-B347A-C National Patent Analytical Systems, Inc (USA)
Related Parts
8455-01-388-8092INTERCHANGEABLE
INSIGNIA,GRADE,ENLISTED PERSONNE
8455-01-388-9536INTERCHANGEABLE
INSIGNIA,GRADE,ENLISTED PERSONNE
8455-01-553-1305INTERCHANGEABLE
INSIGNIA,SHOULDER SLEEVE
8455-01-553-1514INTERCHANGEABLE
INSIGNIA,SHOULDER SLEEVE

Frequently Asked Questions

What is NSN 5945-00-508-1808?

NSN 5945-00-508-1808 is a Relay,electromagnetic, manufactured by Te Connectivity Corporation, classified under FSC 5945 (No Item Name Available). Status: active.

What are the part numbers for NSN 5945-00-508-1808?

NSN 5945-00-508-1808 has 3 cross-referenced part numbers: 673116-103 (Lockheed Martin Corp), B347A (Te Connectivity Corporation), G-1093-B347A-C (National Patent Analytical Systems, Inc).

What NSN replaces 5945-00-508-1808?

There are 4 known substitutes for 5945-00-508-1808: 8455-01-388-8092, 8455-01-388-9536, 8455-01-553-1305 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of B347A?

Key specifications for B347A: Auxiliary Contact Load Current Rating at Maximum Rated Voltage: 5.0 AMPERES AC AND 5.0 AMPERES DC RESISTIVE LOAD; Terminal Type and Quantity: 19 THREADED STUD ALL FUNCTIONS; Features Provided: COIL VOLTAGE SUPPRESSION AND POLARIZED; Center to Center Distance Between Mounting Facilities Parallel to Width: 2.000 INCHES NOMINAL SINGLE MOUNTING FACILITY IN. 25 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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