Retrofit & replacement solutions

D8-U200 relay module - 8 pole



The D8-U200 relay module is a form, fit and function solution to replace all kind of contactors with a maximum of 8 contacts. The module consists of an 8-pole relay, screw or spring clamp terminal connections and a bracket to fasten the module.

By applying the D8-U200 relay module all specifications of the standard D8-U200 relay are valid. The screw or spring clamp connections are made on the front panel by two 8-pole connectors for the contacts and two single pole connectors for the relay coil. The spring clamp version provides 2 connection points per contact. Several contact combinations are possible such as 4 N/O and 4 N/C, 6 N/O and 2 N/C, 8 N/O or a combination of instantaneous and timed contacts. Other contact configuration and numbering on request.

Thanks to its small dimensions the module can be fitted in most places where standard contactors are used. The relay module is standard equipped with a LED. The module is non polarity sensitive by use of a rectifier bridge.

Different kind of mounting brackets are available: high for screw connection, high with 35 mm rail connection and low with 35 mm rail connection. The relay of D8-U200 module in combination with a high mounting bracket can be removed from the module without unscrewing the bracket from the module. The low 35 mm rail mounting bracket is specially designed for space saving applications.


A typical use of the D8-U200 relay module is in a dusty environment where the open construction of a contactor is causing contact problems (dust is gathered between the contacts of the contactor).


  • Ultra compact space saving 8-pole relay module
  • Easy replacement of contactors
  • Module consists of 8-pole relay and socket
  • Various contact combinations possible
  • All 8-pole Mors Smitt relay configurations are possible
  • Non polarity sensitive
  • Heavy duty, high VDC switching
  • Screw or spring clamp connections
  • Terminals at front side
  • Surface / wall and 35 mm rail mounting


  • Space saving
  • Cost saving
  • Several mounting options
  • Dust proof
  • No maintenance
  • Low life cycle cost
  • Long term availability

Railway compliancy

  • EN 50155 Railway application Electronic equipment used on rolling stock
  • IEC 60077 Electronic 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 60571 Electronic equipment used on railway vehicles
  • NF F16-101/102, TS 45545-2 Fire behaviour - Railway rolling stock



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Railway rolling stock
Railway signalling