COR NK / COR PA / COR SA Relay socket


The COR NK socket has single faston. 5 mm faston terminals are required for proper connection. The COR PA is equipped with a guiding plate in supplement of COR NK.
The COR NK and PA sockets are equipped with a wire locking spring. Prior to packing each socket is uniquely keyed in the factory.
The COR NK or PA sockets are suitable for all 300 series relays. The COR SA socket is suitable for 303S relay.


The COR NK, PA and SA sockets are designed for panel mount of relays with single faston rear connection.


  • Rear connection, with single faston 5 mm
  • No internal soldering / connections
  • For panel mount
  • Spring lock
  • COR NK, COR PA suitable for all 300 series relays (303, 310 relays)
  • COR SA suitable for all 303S relays
  • -40 °C…+80 °C operating temperature


  • Proven reliable
  • Long life cycle
  • Easy to maintain and replace
  • Low life cycle cost
  • No maintenance

Railway compliancy

  • NF F 62-002 Rolling stock – Instantaneous relay contacts and sockets
  • NF F 16-101/102 Fire behaviour – Railway rolling stock



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