Double Pole Single Throw Toggle Switch Wiring Diagram

Below is an example of a circuit which utilizes a double pole single throw switch.

Double pole single throw toggle switch wiring diagram.

A double pole double throw dpdt switch is a three selection electrical device in which there is one off and two on positions. Double throw closes a circuit in the up or down position on on. 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. For example you might want to turn on a bathroom light separately from the ceiling fan.

Double switches sometimes called double pole allow you to separately control the power being sent to multiple places from the same switch. You can see above how a double pole single throw switch can be used to put a circuit in any of 1 of 2 modes. Double pole single throw switch dpst circuit. A double throw switch can also have a center position such as on off on.

A single pole single throw spst switch is as simple as it gets. In other words it s like two simple switches controlled by a single actuator. The other position of the handle is off. Single throw closes a circuit at only one position.

A dt switch can also have a center position frequently on off on. The dpst switch for example has four terminals however is a double pole dp and not a four pole 4p switch. The center position is off. A double pole switch such as the one in fig 1 is just slightly bigger than a regular switch but constructed as two single switches harnessed side by side and activated by one common toggle.

An application for this switch is for reversing a direct current dc electrical motor. A double switch allows you to operate two lights or appliances from the same location. A double pole single throw dpst switch controls the connections to two wires at once where each wire only has one possible connection. Single pole throw and double pole throw switches are by far the most common switches but triple and quadruple configurations are also available.

Commonly you ll see switches defined as single pole single throw single pole double throw double pole double throw which are more often abbreviated down to spst spdt and dpdt respectively. When the switch is connected one way for circuit a and circuit b the lamp and led will both be on.