Allen Bradley Guardmaster Single-Channel Safety Switch/Interlock Safety Relay, 24V ac/dc, 3 Safety Contacts

Ensures correct switching of up to 3 contactors with monitoring
Fail-safe internal monitoring
Single channel input for use with interlock switches and emergency stop buttons. 3 uncommitted safety output circuits and provides a contactor monitoring facility and auxiliary output for indication purposes
Power failure on safety critical internal faults result in a lock-out to a safe state
Can also be used as an extension unit for other devices. When inputs are connected to one of the outputs on the host unit, the MSR8T will mimic the outputs on the host unit

EN 60204-1; EN 292; EN 954-1