It was standard practice at a GM facility where I worked to automatically reset the OL's on their IEC starters. The production line was fenced in and each gate had switches on them to E-Stop things if opened at the wrong time.
If an overload tripped it created an error message so you would know if there was a persistent problem with one motor.
Engineering & production supervisors loved these starters for this auto-reset feature, saying it eliminated downtime. Personally, I believe most of these IEC starters and pushbuttons are crap.......but they are smaller and cheaper than NEMA so guess who wins everytime.
