Viper Safety Relay with Added Diagnostics (SCR-21-i)

The SCR-21-i internal logic uses force guided relays to achieve cross monitoring, ensuring single faults are detected at or before the next demand upon the safety function.

  • Outputs 2NC contacts and 1NO contact
  • Dual Channel Safety Inputs
  • Up to PLe, SIL 3, Category 4
  • LED Indication for Reset Circuit Status


Product TypePart No.Part Description
VIPER SAFETY RELAYS280001SCR-21-i Screw Terminals 24V
VIPER SAFETY RELAYS280001-PSCR-21-i Pluggable Terminals 24V

Associated accessories