If I'm reading this right, it would take 1.1-1.5 times the rated current for it to trip when the ambient is 25°C? (1000 seconds or more) That is 33-45A, and 37A is within this interval.

I noticed another thing: The current needed for a magnetic trip seems to be 12-50 times the rated current. Is this normal?

[This message has been edited by C-H (edited 03-03-2004).]