What it is and what it does
The Siemens 3VA9117-0HB20 is a SENTRON lateral motorized operating mechanism — a side-mounted motor operator designed specifically for the 3VA1 160 molded case circuit breaker frame. It provides remote electrical open/close control of the breaker, which means an operator at a panel or a PLC can trip or reset the circuit without walking the line. Rated control supply voltage spans 110 V to 230 V at 60 Hz AC, and the same range applies for DC operation — the description lists 110-250 V AC/DC, so it covers standard North American 120 V and European 230 V control circuits without a separate transformer. The operating apparent power draw is 250 VA, which is the peak inrush the control transformer or power supply must handle during the 0.3 s make and break cycle.
Mounting and integration
This is a lateral (side-mounted) operator, so it bolts onto the left or right side of the 3VA1 160 breaker without increasing the panel depth beyond the breaker's own envelope. The dimensions — 93.8 mm deep, 78 mm wide, 149 mm high — mean it fits within the standard 3VA1 160 footprint; the width is the added overhang on the side of the breaker. Stripped length for the control wiring terminals is 7 mm, which is standard for screw-clamp connections on this class of accessory. The ambient temperature range of -40 °C to 80 °C covers most indoor and outdoor enclosure environments, including unheated warehouses and rooftop HVAC units. The 250 V maximum rating applies to the control circuit, not the main breaker poles — this is the voltage the operator's internal coil and auxiliary switch contacts are rated to switch.