ABB CAL18-11 1-NO/NC Auxiliary Contact Block

The ABB CAL18-11 Auxiliary Contact provides additional switching points for motor starters, contactors, and control relays requiring remote status indication or interlocking operations. This snap-on module mounts directly to compatible contactor frames, mechanically linking to the main contact operation while electrically isolating auxiliary circuits from power connections in HVAC systems. The configuration supplies one normally open plus one normally closed terminal that changes state simultaneously with primary actuation, supporting pilot light wiring, interlock logic, and distant monitoring systems. Spring-loaded mechanisms ensure accurate performance across millions of operations, while compact housing integrates seamlessly with existing parts.