PRS2D75¡­..840 and PRS2DH30¡­720 series soft starters both possess robust metal housing, and are suitable for normal load and heavy load respectively. These soft starters are ultra-compact, easy-to-program and easy to install, all the parameters and functions are displayed by the adjustable keys and selectable-function switch on the front panel, thus each operating status and fault can be clearly indicated through LED , providing low coil energy consumption and realizing energy-saving. Moreover, the specially starting method is especially designed for special load device, such as kick start. Also, the alternative advanced protective electronic over-load-trip board provides more efficiency in protection against over load than the over-heat protection of double sheet metal.