PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

B6543Relay,electromagnetic

Te Connectivity Corporation · NSN 5945-00-257-8782 · FSC 5945 · No Item Name Available
Verified by PartsTable
NSN 5945-00-257-8782 — this item is cataloged by the U.S. Government under National Stock Number 5945-00-257-8782. Primary manufacturer part number: B6543.
Features
  • Relay,electromagnetic — FSC 5945
  • Terminal Type and Quantity: 8 PIN ALL FUNCTIONS
  • Frequency in Hertz: 60.0 NOMINAL
  • Duty Type: CONTINUOUS
  • Mounting Facility Type and Quantity: 1 PLUG-IN TERMINAL(S) SINGLE MOUNTING FACILITY
  • Winding DC Resistance Rating: 200.0 OHMS NOMINAL SINGLE WINDING
  • Main Contact Load Current Rating at Maximum Rated Voltage: 3.0 AMPERES AC RESISTIVE LOAD
  • Operating Voltage Rating and Type at Specified Temp: 115.0 VOLTS DC 25 DEG CELSIUS SINGLE WINDING
Applications
  • Circuit control and protection
  • Equipment power management
  • Signal routing
General Description

The Relay,electromagnetic, cataloged under National Stock Number 5945-00-257-8782, 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 12 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. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5945-00-257-8782
Primary Part NumberB6543
Item NameRelay,electromagnetic
FSC / FSG5945 / 59 — No Item Name Available
ManufacturerTe Connectivity Corporation
StatusACTIVE
Terminal Type and Quantity8 PIN ALL FUNCTIONS
Frequency in Hertz60.0 NOMINAL
Duty TypeCONTINUOUS
Mounting Facility Type and Quantity1 PLUG-IN TERMINAL(S) SINGLE MOUNTING FACILITY
Winding DC Resistance Rating200.0 OHMS NOMINAL SINGLE WINDING
Main Contact Load Current Rating at Maximum Rated Voltage3.0 AMPERES AC RESISTIVE LOAD
Operating Voltage Rating and Type at Specified Temp115.0 VOLTS DC 25 DEG CELSIUS SINGLE WINDING
Winding Quantity1
Coil Quantity1
Nominal Operating Current Rating and Type100.0 MILLIAMPERES DC SINGLE WINDING
Pile-Up Main Contact Form Arrangement1A2B
Main Contact Maximum Voltage Rating in Volts50.0 AC
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
1680-00-696-6257B6543 INTERCHANGEABLE
Retainer,pinion Sha
Aerocontrolex Group, Inc. Div Talley Actuators
1680-01-072-5695B6543 INTERCHANGEABLE
Foot,fixing
Page Aerospace Limited
Cross-Reference Index
Part NumberManufacturer
B6543 Cp Clare Corp North American Sales Operations (USA)
B6543 Te Connectivity Corporation (USA)
B6543 PRIMARY Te Connectivity Corporation (USA)
Related Parts
1680-00-696-6257INTERCHANGEABLE
RETAINER,PINION SHA
B6543
1680-01-072-5695INTERCHANGEABLE
FOOT,FIXING
B6543

Frequently Asked Questions

What is NSN 5945-00-257-8782?

NSN 5945-00-257-8782 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 5945-00-257-8782?

NSN 5945-00-257-8782 has 3 cross-referenced part numbers: B6543 (Cp Clare Corp North American Sales Operations), B6543 (Te Connectivity Corporation), B6543 (Te Connectivity Corporation).

What NSN replaces 5945-00-257-8782?

There are 2 known substitutes for 5945-00-257-8782: 1680-00-696-6257, 1680-01-072-5695. Verify interchangeability with system specifications before substitution.

What are the specifications of B6543?

Key specifications for B6543: Terminal Type and Quantity: 8 PIN ALL FUNCTIONS; Frequency in Hertz: 60.0 NOMINAL; Overall Width: 2.000 INCHES NOMINAL IN; Overall Length: 2.120 INCHES NOMINAL IN. 16 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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