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Old 07-20-2014, 10:37 PM   #1 (permalink)
Astro
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Join Date: Nov 2013
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What main contactor to use for AC system with regen?

I have searched around and i am finding it difficult to select a main contactor.

The main concern i have is that most contactors seem to have polarity preffernces. The main contacts being labelled with + and - or A1 and A2. Because the current can flow in either direction in an AC setup with regen i don't want to damage the main contactor.

Several data sheets for contactors mention things like magnetic blowouts which i have heard don't like reversed current flow.

Anybody with an AC motor setup like to share their contactor experiences?

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