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ACTD4-U200 relay - Voltage monitoring, timer, delay-on


Dit product is niet langer beschikbaar. Het vervangende relais is de MTDV4-U200.
Klik hier om naar de productpagina van de MTDV4-U200 te gaan.


Plug-in electronic voltage monitoring relay with four change-over contacts. When the relay is activated there is a delay on pull-in. The delay time is adjustable with a lockable knob. The relay can also be supplied with a fixed time delay (no knob). The pull-in voltage is adjustable with a lockable knob. The relay can also be supplied with a fixed pull-in voltage (no knob). The relay reacts on the mean value of a DC voltage with ripple. The drop-out voltage level is fixed.
Standard equipped with magnetic arc blow-out for high breaking capacity and long contact life. The ACTD4-U200 does not need an auxiliary supply.
The construction of the relay and choice of materials makes the ACTD4-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.


These relay series are designed for demanding train borne applications. The ACTD4-U200 is used in applications for voltage monitoring with time


  • Voltage monitoring and time delay relay, delay on pull-in
  • Compact plug-in design
  • 4 C/O contacts
  • Delay time adjustable with lockable knob, fixed time delay possible (no knob)
  • Pull-in voltage adjustable with a lockable knob, fixed pull-in voltage possible (no knob)
  • Fixed drop-out voltage
  • No auxiliary supply necessary
  • Flat, square and silver plated relay pins for excellent socket connection
  • Integrated snap lock
  • Optional positive mechanical keying relay to socket


  • 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