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Circuit Breaker Uninterrupted Setting

Thread starter bdfig
Start date Nov 6, 2012

Status: Not open for further replies.

Nov 6, 2012

bdfig

Electrical

Hi all,

I am currently using ABB circuit breakers, which has an uninterruptible current rating equal to their frame size. However the long time pickup of their associated trip devices has a tolerance of 1.05 to 1.20. Does the continuous current rating of the CB preclude me from using the maximum long time pickup setting? Any advice is appreciated.