AC and DC MCBs
AC and DC MCBs
(OP)
Hi all,
I am just curious of the effects of using AC MCB circuit breakers for DC applications (i.e. using a 4 Amp C-Curve AC MCB to protect a 24VDC control circuit). I am aware of the arc extinguishing problems at the high end of the scale but am curious (mainly because of the price difference) for this type of application.
Thanks
I am just curious of the effects of using AC MCB circuit breakers for DC applications (i.e. using a 4 Amp C-Curve AC MCB to protect a 24VDC control circuit). I am aware of the arc extinguishing problems at the high end of the scale but am curious (mainly because of the price difference) for this type of application.
Thanks






RE: AC and DC MCBs
RE: AC and DC MCBs
RE: AC and DC MCBs
Did you mean to say "The dc VOLTAGE ratings will be much lower than for ac.
I think the current ratings are the same, but the voltage ratings are much lower.
respectfully
RE: AC and DC MCBs
Although in looking through an old GE publication, I find that although the dc interrupting levels are lower than for ac, the levels are not as much lower as I remembered. It varies quite a bit depending on the breaker and if it is one pole or two pole.