Intelligent SoftStarter Assembly Unit is a new motor control device that integrates soft start, soft stop, light load energy saving and multi-function protection, also known as SoftStarter. Rectification Device for Electric Welder,thyristor assembly consists of two anti-parallel SCRs are pressed with a relatively high force onto heat-sinks which also serve as electrical contacts to the thyristor terminals. soft starter thyristor components,each phase consists of phase control thyristor,one set use three phase thyristor components,mainly used for medium voltage soft starter.