• Product Guide
  • Low Voltage Products and Systems
  • Control Products
  • Electronic Relays and Controls
  • Safety Relays

Safety Relays - C57x and C67xx Range

The ABB safety switching devices comply with all requirements of
  • EN 60204, part 1
  • EN 954 - 1

Safety circuits must meet the following requirements:
  • Coping with an individual fault including all sequential faults in the control circuit (single-fault tolerance)
  • Prevention of automatic restart of the machine when the EMERGENCY-STOP facility is reset
  • Setting up a redundant circuit by at least two contactor relays
  • Creating diversity, by combining n/c and n/o contacts of the contactor relays
  • Cyclic monitoring of the safety circuit with each ON-OFF cycle

Fields of application:
  • EMERGENCY STOP circuits
  • Safety gate monitoring
  • Two-hand controls
  • Safety tread mats

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