... , new series mcb+rccb+isolating switch for Ukraine, Russia markets circuit breaker, contactorDC contactor KT6022KT6023,CKJ5,HR6,FZN16new series mcb+rccb ... . Shanghai CET Group have 7 branches in China to produce:Circuit breaker: mcb, rccb, mccb, rcbo.AC contactor: LC1-D, GMC ...