The following switch diagrams illustrate the most common types of toggle and rocker switches.
Single pole double throw toggle switch.
Spdt single pole double throw.
One for the input and two for the a and b outputs.
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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 double throw.
The two terminals are normally connected together closed and are open when the switch is activated.
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Double pole double throw switch dpdt circuit below is an example of a circuit which utilizes a double pole double throw switch.
They are commonly denoted 3pst 3pdt 4pdt etc.
A dpst switch has four terminals.
Two inputs and two outputs.
It can serve as an on off switch depending on how the circuit is wired.
This type of switch is sometimes called an a b switch because it lets you choose between two circuits called a and b.
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A single pole double throw spdt switch is a switch that only has a single input and can connect to and switch between 2 outputs.
Single pole single throw normally closed a simple on off switch.
5pcs dpst on off industrial toggle switches 1221 double pole single throw.
5pcs dpst on on industrial toggle switches 1321 double pole single throw.
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.
A dt switch can also have a center position frequently on off on.
A single pole double throw switch can serve a variety of functions in a circuit.
Dpst double pole single throw.
It s got one output and one input.
An example is a pushbutton switch.
A double pole double throw switch is actually two single pole double throw spdt switches.
An spdt switch has three terminals.
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A single pole single throw spst switch is as simple as it gets.
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Click here for our automotive switches download the poles and throws datasheet.
Single pole throw and double pole throw switches are by far the most common switches but triple and quadruple configurations are also available.
A dpst switch turns two circuits on or off.
In other words it s like two simple switches controlled by a single actuator.