The GMS-100H-75A is a manual motor starter designed for the switching and protection of 3-phase AC motors. It features an adjustable thermal release range of 55-75A and a magnetic release operating current of 975A for reliable overload and short-circuit protection. This high break capacity starter provides an ultimate short-circuit breaking capacity (Icu) of 75 kA at 400/415V and a service short-circuit breaking capacity (Ics) of 50 kA at the same voltage. With built-in phase failure protection and a durable design, it is ideal for AC-3 motor control applications requiring robust manual operation and safety.