Description
The ABB CA4-10 Auxiliary Contact Block is a front-mounted switching component designed to add a single normally open contact to AF series contactors. It operates by mechanically linking with the main contactor so that its contact changes state in sync with the primary switching action, allowing external circuits to monitor or signal the status of the contactor in HVAC systems. It is commonly used in control panels, motor starters, and compressors or circuits where feedback to controllers or switches is required for coordinated operation. Supporting better coordination between the switching system and monitoring elements in industrial and building automation systems.
