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Snubber circuit design

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www111

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Hi all,

I want to control (switch on/off) inductive motor(230Vac) via relay, and I should use a snubber circuit to suppress Voltage transients.
Do I have to connect the snubber across the relay contact or across the motor contacts (if across the motor , do I have to use 1 snubber(RC) per induktor coil?), and do I still need to use a protection diode for the relay across the contacts?

Best Regards
 

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