Make or break an electrical circuit. These contact blocks mount to manual switches and transmit an electrical signal when the switch actuator is engaged. You can stack multiple blocks, so a single switch can control several circuits. This is helpful in setups that require multiple systems to turn on or off at the same time. For example, the switch on a conveyor line could turn off the conveyor and turn on a diverter and alarm.

Quick-make blocks close the contacts milliseconds before the push-button or lever is fully actuated, so they’re often installed in safety systems. For example, you can connect one quick-make block and one standard block to a switch that controls two circuits—this ensures one contact turns on or off before the other.