The GMS-63H-40A is a 3-pole manual motor starter designed for the switching and protection of 3-phase AC motors. It features a rated operational current of 40A with an adjustable thermal release range of 28-40A and a fixed magnetic release at 13 times the maximum rated current. This high-break model offers a breaking capacity (Icu) of 100 kA at 440V, operates on a 50/60 Hz frequency, and has a rated insulation voltage of 1000V. Key protection features include Trip Class 10 overload characteristics, phase-failure protection, and ambient temperature compensation. With a robust mechanical endurance of 50,000 cycles and IP20-rated finger-safe terminals, it is suitable for various industrial motor control applications.