Motor Circuit Switch. A switch pole refers to the number of separate circuits that the switch controls. Rated in horsepower and capable of interrupting the maximum operating overload current of a motor of the same rating at the rated voltage.
A double pole switch is like two separate single pole switches that are mechanically operated by the same lever knob or button. If the single pole switch marked s1 is left open then the liquid level switch in the circuit will now be the control device that turns the motor starter on or off. In this circuit the load will always be on unless power is lost to the entire control circuit because either the single pole switch could be the activating factor or at any given moment the liquid level switch could energize the coil of the motor starter in the control circuit.
They are readily available just make sure you get one with the same or larger current rating.
A double pole switch is like two separate single pole switches that are mechanically operated by the same lever knob or button. The motor controller is required to open only as many conductors of the circuit as necessary to start and stop the motor 430 84. As the circuit exists right now the motor will run either forward or backward once the corresponding pushbutton switch is pressed and will continue to run as long as there is power. A general use snap switch with a motor full load current rating not more than 80 of the ampere rating of the switch.
