The other terminal is for the output. Dp switches control two independent circuits and act like two identical switches that are mechanically linked.
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Spst switch wiring diagram. Pole refers to the number of circuits controlled by the switch. 1 terminal is for the input. Connect the live line or phase wire to the lower terminals of spst 1 way and spdt 2 way switches. Pin 2 is where the accessory that the switch is going to turn on is connected. Pin 1 is where the rocker switch receives the input power. Sp switches control only one electrical circuit.
Pin 3 is where the switch is either connected to ground or left open. Connect the lamp 1 to the upper terminal of spst switch. Spst switches should only require two terminals. Spsts are perfect for on off switching. Theyre also a very common form of momentary switches. Spst toggle switch wiring.
Also relays can be used to switch higher draw accessories to reduce switch load and voltage drop. You might want to review the article on toggle switch wiring before proceeding. Sp and dp refer to single pole and double pole st and dt refer to single throw and double throw. Its got one output and one input. Do the proper earthing and grounding according to your local area codes. Spst toggle switches function as simple on off switches.
We will now go over the wiring diagram of a spst toggle switch. What do spst spdt dpst and dpdt mean. You can see that a spst toggle switch only has 2 terminals. A single pole single throw spst switch is as simple as it gets. The switch will either be closed or completely disconnected. The diagram below represents the schematic diagram for a spst rocker switch.
Connect the lamp 2 to the common middle terminal of spdt switch shown by blue wire in the circuit diagram. Below is the wiring schematic diagram for connecting a spst toggle switch. An illuminated rocker switch is like a spst toggle switch with an extra terminal which allows the light to work.
Gallery of Spst Switch Wiring Diagram
