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