ABB SSR20 SAFETY RELAY, OUTPUT 3NO+1NC, +24VDC, MONITORING OF TWO-HAND DEVICES

This safety relay is designed for monitoring two-hand devices. It has 3 normally open (NO) relay outputs and 1 normally closed (NC) relay output. The supply voltage is +24 VDC and it features screw terminals for easy installation. You can choose between manual or automatic reset using the switch on the front of the relay.