The Siemens 3VA9117-0HB10 is a lateral motorized operating mechanism from the SENTRON accessories line, built specifically for the 3VA1 160 molded case circuit breaker. It provides remote On/Off and reset control via an AC control supply, drawing 250 VA during operation. With typical make and break times of 0.3 s, this operator is fast enough for normal remote cycling without mechanical strain on the breaker mechanism.
Where and how it's used
This operator mounts on the side of the 3VA1 160, allowing remote operation from a PLC, DCS, or manual pushbutton station — common in panel building for motor control centers, distribution panels, and automated switchgear. The 250 VA operating power should be accounted for in your control transformer sizing; it peaks during the make/break cycle.
Panel fit and wiring
The mechanism measures 149 mm high, 78 mm wide, and 93.8 mm deep. The 78 mm width is the critical dimension — it adds to the side profile of the breaker. Ensure your panel layout has clearance on the right or left side of the breaker for this operator. Stripping length for the control wiring is 7 mm; use ferrule or bare wire to that length for reliable spring-cage termination.