Safer in Working: Adopting internal working mode, without internal mechanical contact, non sparking use and low noise, higher work safety. Wide Application: Can be used for motor， power rectifiers, heating , dimming, contactless switch, stepping motor start, etc. Has Fine Feature: The and panel are electrically insulated, and also has excellent welding structure and circulation ability. Quick to Install: Comes with a compact size and a light weight as well, the rectifier module can be conveniently installed within minutes. Copper Baseplate: Enhanced copper base plate, smooth , fast heat dissipation, prevent overheating protection and smooth operation.