The ABB VM96-4 mechanical interlock unit is an essential component for ensuring the safe and efficient operation of electrical systems. Specifically designed for use with two AF contactors, this unit effectively prevents one contactor from closing while the other is engaged, thereby avoiding potential electrical conflicts and enhancing system reliability. The VM96-4 model includes two fixing clips (BB4) for secure installation, making it a reliable choice for maintaining the integrity of your electrical setup. Ideal for industrial applications, this mechanical interlock unit from ABB offers peace of mind with its robust construction and dependable performance.