1SAM201909R1021

ABB 1SAM201909R1021 MSAH1 is a shaft-support accessory used in door-coupling solutions for ABB manual motor starters and motor protection circuit breakers. It provides additional mechanical support for the OXS6 extension shaft connecting the internal motor starter with an external MSHD rotary operating handle mounted on the electrical-panel door. The MSAH1 is particularly required for installations using an OXS6 shaft longer than 130 mm, helping maintain correct shaft alignment and reliable rotary operation. It is commonly used in industrial MCC panels, machine control panels, electrical enclosures and motor-control applications.