Thread: Relay V Contactor
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17-03-2014 #3
Eddy is spot on with his reply. Contactors are generally used in conjunction with relays and other equipment like thermal overload switches. BOB's normally have a small low voltage relay built in for switching your spindle or other equipment on or off from your software. These low voltage relays can then be used as a control switch to switch a higher mains voltage relays.
Mike :)
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