Application: ZJW Series DC contactors involved 50A,100A,100A-2,100A-2T,200A,400A,500A. these are applicable for the battery or the rectification power and supplies power,using for handing drawing,the pump motor and other-electronic vehicles. Specifications: Rated Current:50A,100A,200A,400A,500A Voltage:12V-48V Mechanical life:100million times