Single Pole Single Throw Switch Schematic

An spst switch has two terminals.

Single pole single throw switch schematic.

A graphic illustrating an spst switch. It has four terminals. When the switch is closed the circuit is on. 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 spst switch circuit. Spdt single pole double throw. An spst switch has two terminals. A double pole switch is what you need to control a 240 volt device because 240 volt circuits have two hot wires.

One for the input and one for the output. When the switch is open the circuit is off. Spst single pole single throw. The difference between a single and double pole switch is that the latter controls two circuits at the same time.

Below is an example of a circuit which utilizes a single pole single throw switch. Spdt single pole double throw. This means it has one input terminal and two output terminals. One for the input and one for the output.

The circuit symbol and a simple diagram representing the switch are shown and labelled. Two for incoming hots and two for outgoing hots. Sp and dp refer to single pole and double pole st and dt refer to single throw and double throw. Dp switches control two independent circuits and act like two identical switches that are mechanically linked.

Spst single pole single throw. Pole refers to the number of circuits controlled by the switch. An spdt switch routes one input circuit to one of two output circuits. A basic on off switch that turns a single circuit on or off.

Sp switches control only one electrical circuit. A single pole double throw switch can serve a variety of functions in a circuit. A single pole single throw switch serves in circuits as on off switches. Spst switches are thus very simple in nature.