ECN Forum Forums General Topics of the Trade Non-US Electrical Systems & Trades Rcd trip times

It's interesting to tryand figure out why the breaker should take longer to trip at the higher current.

I'm thinking along the lines of hyteresis in the core maybe? It's quite a difference though -- After all, a full-cycle of 50Hz is 20mS.



[This message has been edited by pauluk (edited 09-17-2005).]