The RY4 Series offers a range of dedicated safety relay output switching options for use with the T4 and SG series of safety light curtains.

In addition the RY4 Series relays have been designed to provide easy connection of the T4 Series safety light curtain. The units mirror the T4 series and SG series functions for simple connection and offer a different number of normally open safety contacts for increased flexibility.

The units when used in conjunction with the T4 and SG series are suitable for applications where the control system is rated as EN ISO 13849 - 1 PL e, EN 61508 SIL 3 and BS EN 954-1, Category 4


  • Dual safety inputs
  • Safety monitored output relays. Contacts rated at 250V AC, 6A
  • Auxiliary electronic output for status indication etc.
  • LED status indicators for all inputs and outputs
  • Din rail mounting - 70mm enclosure
  • Built to BS EN 13849-1 PL e

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