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TDE4-U200 relay - Timer, delay-off, 4 pole


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Plug-in electronic railway timer relay with four change-over contacts. When the relay is not energized anymore there is a delay on drop-out, without any auxiliary power supply. The delay time is adjustable with a lockable knob. The relay can also be supplied with a fixed time delay (no knob).
The relay is equipped with a LED which indicates the presence of energizing voltage. Standard equipped with magnetic arc blow-out for high breaking capacity and long contact life.
The construction of the relay and choice of materials makes the TDE4-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 TDE4-U200 relay an easy and flexible solution to use.


These relay series are designed for demanding rolling stock applications. The TDE4-U200 is used in applications where a time delay on drop-out is necessary after de-energizing the relay.


  • Time delay relay
  • Delay on drop-out (without auxiliary power supply)
  • Compact plug-in design
  • 4 C/O contacts
  • Delay time adjustable with a lockable knob
  • Also available with fixed time delay
  • Total time delay range: 0.1 s...100 s
  • Magnetic arc blow-out
  • One LED for voltage presence
  • Flat, square and silver plated relay pins for excellent socket connection
  • Wide range sockets
  • Integrated snap lock


  • 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 compontents 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