... of AC 50 or 60H,voltage up to 550V for all distance making and breaking circuit and frequent start ... starter motors, motor starters,magnetic control,auto starter ,magnetic starter for air compressor,reversing starter,starter switch ,magnetic switch,magnetic generator ... so on.Manufacture, good price high qualityWELCOME TO ENQUIRY S LE1 TYPE MAGNETIC STARTER FOR AIR COMPRESSOR AND REVERSING STARTER