Kufo Seco DC103SWM44 Magnetic Starter Switch for 5 HP 440V / 60 Hz / 3 Phase is an industrial grade magnetic starter switch for a 5 Horsepower, 440-Volt, 60-Hertz, 3-Phase motors only. It is designed to protect your equipment against thermal overload and automatically shuts down if power is interrupted. This started switch is required to be installed and re-wired only by a certified electrician.