The PSR Mini PC20 Optocoupler is a coupling relay that can be used for power adaptation and electrical isolation in high and low-demand applications up to SIL 3. When using this module, circuits are interrupted in a safety-oriented manner.
The PC20 safety relay has an interface for the TBUS DIN rail connector via which the diagnostic supply voltage can be routed.

Used in applications up to SIL 3 according to IEC 61508 & EN61511
Used for safety-related switching off
12.5mm housing width
Approved for Class l, Zone 2 applications
Integrated DCS test pulse filter
Low inrush current
2 internal 5AT fuses, TBUS connection
1 undelayed enabling current path
1 undelayed confirmation current path
1 digital signal output
Option of screw or spring-cage terminal blocks for plug-in

IEC 61508, EN 61511