Self holding (latching) Contactor
- BeagleBrainz
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22 Oct 2020 23:27 #186941
by BeagleBrainz
Self holding (latching) Contactor was created by BeagleBrainz
So I have a couple of 3 phase contactors with 24V DC coils that I'm using to switch single phase ( Actvice & Neutral ) to some PSUs.
As I'm only using 2 of the 3 contacts of the contactor can I use the 3rd contact ( 24VDC ) to latch the contactor on or do I need a few more Aux contacts ?
As I'm only using 2 of the 3 contacts of the contactor can I use the 3rd contact ( 24VDC ) to latch the contactor on or do I need a few more Aux contacts ?
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- Aciera
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23 Oct 2020 06:06 #186975
by Aciera
Replied by Aciera on topic Self holding (latching) Contactor
As a workaround that certainly works. Only issue might be that in the 24V branch the current might not reach the specified wetting current of the contactor and you might get oxidized contacts. Doesn't happen often but just so you know.
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- BeagleBrainz
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23 Oct 2020 06:55 #186976
by BeagleBrainz
Replied by BeagleBrainz on topic Self holding (latching) Contactor
Cheers.
It would only be coil current, about 300ma. I guess I can only give it a try and see how I go.
It would only be coil current, about 300ma. I guess I can only give it a try and see how I go.
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