Door coupling 8x 8mm Accessories for: Shaft 8x 8mm, 3VA, 3VM, 3KX, 3RV, 3LD5 UL door coupling rotary drive, 3KD Manual drives for all-round convenient operation of the 3VA molded case circuit breaker.Available as front, door and side wall rotary drive with various locking and locking options. The handles are available as standard and EMERGENCY STOP versions, each with or without lighting kit.SENTRON molded case circuit breaker 3VA - One system. For all applications.