Contactors are relays used to switch high current and high power devices like motors.
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Q56: Relays usually have the same pull in
Q57: Commercial and industrial relays generally have the
Q58: Relays with reed and mercury wetted contacts
Q59: On delay type time delay relays close
Q60: The instantaneous contacts on a time delay
Q62: Contactors have thermal overloads built into the
Q63: Three wire control just identifies the number
Q64: Contactor auxiliary contacts are used in the
Q65: Contactor overload contacts are used in the
Q66: Switch problems can be grouped into two
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