It has four terminals. The motors two power leads are reversed at one of the switches screw terminals.
Here S How You Can Use A Double Pole Switch As A Single Pole
Wiring a double pole switch. Double switches sometimes called double pole allow you to separately control the power being sent to multiple places from the same switch. A double pole switch such as the one in fig1 is just slightly bigger than a regular switch but constructed as two single switches harnessed side by side and activated by one common toggle. The difference between a single and double pole switch is that the latter controls two circuits at the same time. A double switch allows you to operate two lights or appliances from the same location. An application for this switch is for reversing a direct current dc electrical motor. Two for incoming hots and two for outgoing hots.
A double pole switch is what you need to control a 240 volt device because 240 volt circuits have two hot wires. A double pole double throw dpdt switch is a three selection electrical device in which there is one off and two on positions. D ouble pole switches are usually rated at 30 amps so any appliance or equipment requiring a greater power consumption have to be connected to a disconnect.
Gallery of Wiring A Double Pole Switch
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