Siemens 3VA9157-0HA20 Motor Operator

Siemens 3VA9157-0HA20 is a motor operator accessory designed to drive the Siemens SENTRON 3VA11 circuit breaker in remote or automated switching configurations. It accepts control power from 110-230 V AC or 110-250 V DC and has a compact 76.2 mm length, purpose-built to attach to and operate the 3VA11 breaker. As part of Siemens’ motor-operated accessory lineup, it integrates with standard control circuits used in modern switchgear, enabling reliable motorized opening and closing of the 3VA11 within distribution panels or protection schemes. The 3VA9157-0HA20 is specifically intended for use with the 3VA11 family, ensuring a precise fit within the Siemens SENTRON ecosystem. Typical applications include industrial and commercial electrical installations where remote or automatic breaker operation is required, such as centralized control rooms, automation racks, or remote distribution panels. This motor operator’s voltage flexibility and dedicated form factor support consistent mechanical actuation in accordance with Siemens specifications for 3VA11 compatibility.