KCD-U200 relay - Latching , 2 pole



Plug-in bistable railway relay with two change-over contacts. The contacts remain in the last powered position, the position is clearly visible, optional shown via a position indicator. Bistable by means of two coils and a mechanical rocker mechanism. The two separate coils are galvanically isolated. The contacts are weld-no-transfer contacts: they are mechanically forced in the same position.
The construction of the relay and choice of materials makes the KCD-U200 relay suitable to withstand low and high temperatures, shock & vibrating and dry to humid environments.
No external retaining clip needed as integrated ‘snap-lock’ will hold relay into socket under all circumstances and mounting directions.
Compact design, choice of many options and a wide range of sockets makes the KCD-U200 relay an easy and flexible solution to use.


These relay series are designed for demanding rolling stock applications. The KCD-U200 is used in applications where two contacts are used in one
relay and the contacts are set and reset with permanent power or impulses.


  • Latching (bistable) relay
  • Compact plug-in design
  • 2 C/O contacts
  • 2 galvanic isolated coils
  • Clear position indicator (optional)
  • Weld no transfer contacts
  • Flat, square and silver plated relay pins for excellent socket connection
  • Wide range sockets
  • Integrated snap lock
  • Transparent cover
  • Optional positive mechanical keying relay to socket
  • Flexibility by many options


  • Proven reliable
  • Long term availability
  • Easy to maintain
  • Low life cycle cost
  • No maintenance

Railway compliancy

  • EN 50155 Electronic equipment used on rolling stock for railway applications
  • IEC 60571 Electronic equipment used on railway vehicles
  • IEC 60077 Electrical equipment for rolling stock in railway applications
  • IEC 60947 Low voltage switch gear and control gear
  • IEC 61373 Rolling stock equipment - Shock and vibration test
  • IEC 60947-5-4 Electromechanical components for control applications. This standard examines both coil and contact specifications in depth
  • EN 50121 Electromagnetic compatibility for railway applications
  • NF F 16-101/102, TS 45545-2 Fire behaviour - Railway rolling stock
  • NF F 62-002 On-off contact relays and fixed connections



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Railway rolling stock
Railway signalling