------Question for 1471917 Please Put your question below------
Do Electronic Circuit Breakers, ECB’s have a trip curve similar to Miniature Circuit Breakers, MCB’s ?
Like the B, C or D curves of the MCB’s.
Thanks, Steve
Hello smonetus,
Great question! I admit that this area is not my strong suit, however in my research I believe the answer somewhat relies on how the question is asked. That is to say that generally ECBs will not have the same rating system as the curves (B, C, D) for the MCBs, however because ECBs typically require you to program the responses you could program them to mimic the characteristic curves of an MCB.
In essence - ECBs won’t have a trip curve similar to the MCB unless you program it to.
Regards,
Klint
Hi smonetus,
Just as a reference, page 8 of the datasheet for the 1471917 shows the “curve” for the response time as below:
“IN” on the horizontal scale refers to the nominal max current for which it will not trip. This value can be adjusted from 1A to 6A, with 4A being the preconfigured value. The “x” refers to the multiplier of IN.
From page 3 of the datasheet, it states the following, which correspond to the graph above:
Comparing this to B, C, and D curves I’ve seen, it appears to be closest to a B curve, but a bit faster. It looks like a B curve will trip rapidly for currents somewhere between 3A and 5A, but could take 50s or longer at 2 x IN.
Hello @smonetus,
Please consider this related article:
Electronic Circuit Breaker Protector for Industrial Control
Sincerely,
APDahlen