Coupling relay - PSR-PC20-1NO-1NC-24DC-SC - 2700577

Coupling relay for SIL 3 high- and low-demand applications, couples digital output signals to the I/O, 1 enabling current path, 1 confirmation current path, 1 digital signal output, safe state off applications, test pulse filter, PSR-TBUS connection, plug-in screw terminal block



Technical data




Your advantages

  • Up to SIL 3 according to IEC 61508
  • Forcibly guided contacts according to EN 50205
  • Easy proof test according to IEC 61508 thanks to integrated signal contact
  • Approved for Class I, Zone 2 applications
  • Low housing width of just 12.5 mm
  • Enabling current path protected via internal fuse as an option
  • Long service life thanks to filtering of controller test pulses
  • 1 enabling current path, 1 digital signal output, 1 diagnostic current path
  • Couples digital output signals from failsafe controllers to I/O devices (valves, etc.) for electrical isolation and power adaptation
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Key Commercial Data

Orderkey 2700577
Packing unit 1 pc
Catalog page Page 284 (C-6-2017)
Weight per Piece (excluding packing) 189.100 GRM
Custom tariff number 85364900
Country of origin DE (Germany)


8240 Parkhill Drive
Milton, Ontario L9T 5V7

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