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Question about switching 240V load.

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mfacen

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I need to switch a 20A 240 Volts load, I have a relay rated 40A with just 4 terminals, the 2 for switching on the relay and the others 2 a NO contact, so my question is if its OK to switch a 2 phase load by switching off just one of phase or should I use 2 relays and switch both phases.
 

Hi,

Swithing both phases is the safe way. If this is within a device that has a plug to disconnect totally from mains i see no problem..

But you have to comply to your local regulations.


Hope that helps
Klaus
 

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