Single Pole Single Throw Symbol

The two terminals are either connected together or disconnected from each other.

Single pole single throw symbol.

A 2 way changeover switch directs the flow of current to one of two routes according to its position. A single pole single throw switch serves in circuits as on off switches. When the switch is closed the circuit is on. Single pole double throw.

Double pole single throw dpst a pair of on off switches which operate together shown by the dotted line in the circuit symbol. Spdt single pole double throw. 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. The two terminals are normally disconnected open and are closed when.

A dpst switch is often used to switch mains electricity because it can isolate both the live and neutral connections. This means it only has one input terminal and only one output terminal. It is also called a changeover switch. An example is a light switch.

It can serve as an on off switch depending on how the circuit is wired. Some spdt switches have a central off position and are described as on off on after selecting the spdt symbol you can change the switch position up center or download by the action button. This switch can be on in both positions switching on a separate device in each case. For example a spdt switch can be used to switch on a red lamp in one position and a green lamp in the other position.

This means it has one input terminal and two output terminals. A simple on off switch. Single pole single throw.