wrote in message
...

I had a quick look at the print and I can't say for sure, but I think it's
possible that the magnets are there to aid the return springs. Looks like
this baby can put out some serious current.

"But if for some reason the current stops, then the contacts
remain closed until reverse powered open perhaps at start-up. ..."

Nope, nothing like that on the print.





Perhaps something along this line:

http://www.ia.omron.com/data_pdf/dat...eet_csm570.pdf



Gareth.