Contactor connection pole

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artvk   1 µW

1 µW
Posts: 4
Joined: Sep 14 2017 1:10am
Location: Bangkok

Contactor connection pole

Post by artvk » Oct 22 2018 11:24pm

Hi guy,

I would like to know is it matter about connecting the right pole A1 and A2 in contactor ?
I got Kilovac LEV200. Will contactor destroy if connect wrong pole , I saw A1 and A2 with + - marked on it.
What is happen if connecting wrong side of the pole ?

Thanks
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Art

major   10 kW

10 kW
Posts: 749
Joined: Mar 10 2013 10:12am
Location: NW Ohio, USA

Re: Contactor connection pole

Post by major » Oct 23 2018 12:45am

These contactors have a magnetic blowout. That's an internal magnet to direct or lessen the arc. As such, they are polarity sensitive. The direction of the arc diversion is reversed if the current flows the opposite direction. Reverse polarity may just shorten life or worst case will cause the contacts to weld closed.

major

artvk   1 µW

1 µW
Posts: 4
Joined: Sep 14 2017 1:10am
Location: Bangkok

Re: Contactor connection pole

Post by artvk » Oct 23 2018 10:28pm

Thanks major
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Art

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