echoing Don's comment, be VERY careful about their ratings, if you are even approaching their max, go up, or go with NEMA. I know of at least one case where a manufacturer used them within their ratings, but at the top quadrant, after we put the fires out (literally) we changed to NEMA.
They are space savers, agreed, but again, be very cautious.
BTW, I won't discuss the incident on the forum, the manufacturer.....voluntarily.....changed the contactors. By measurement, and calculation, the IEC's fit (again, but just) but would not take a ...normal... abuse. obviously the wrong application.
cuidado, amigo
