The Electrical Actuator (A) has different types such as the on-off, modulating and passive contract. The available models are KST-05, 10, 20, 40, 60, 100 and 200. The torque of the unit ranges from 50-2000Nm, while the ambient temperature ranges from -20℃ to +60℃ . The cover is made of aluminum alloy. The various voltages are 24VDC, 110VAC, 220VAC and 380VAC.