usually adopts rectangle fire-retardant plastic cases, with completelysealed construction of epoxy resin. The characters of this type: small volume,light weight, little loss, high insulating resistance,excellent selfhealing performance, stable performance, withstand impact current, strong overload. It applies to fanners, electric water pumps and etc, with frequency 50/60Hz, voltage 130VAC-500VAC, and can help motors start and run. It can continuously operate under rated Conditions.