Soft starters lower energy use and reduce wear and tear on motors and connected mechanical equipment. Fully digital, the Stellar SR55 series starters use thyristors for reduced voltage starting/stopping, have automatic configuration, built-in bypass relays, and a patented iERS system that reduces energy costs when used on lightly-loaded or oversized motors.
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Would you buy this item again? Yes
This soft start is very easy to program/configure and works very well. It recently replaced a failed 25 year old SS that didn't have any bypass contactor. The application was a dust collection fan unit. We have used the the next size up on a larger mixer motor that sometimes had to start under load, and no problems starting.