myself i will not even think about leaving the O/L relay on auto resetting at all because of safety reason.
as Iwire [ bob] stated about leave it on manual reset because it is easier to spot the trouble and the only place i useally leave on auto resetting is hemispear sealed refrigent commpressor [ they useally have some kind of thermal proctetion on it allready { some size not all } ]
i did work on one machine shop the owner insteted useing automatic reseting i say no way due the sisuation the machine have to run.
i did conveted the owner just leave it on manual resetting and he found out why because few time machine did jammed up the O/L kicked out and got it unjammed compared to automatic reset it can start unexpected at all unless the power is off completly
speaking of IEC vs NEMA starter i rather use the NEMA starter hand down due stronger construction
Merci, Marc
