Manufacturers of switches and relays focus on miniaturization while delivering greater functionality with more options.

Single pole means that it can only control a single circuit, and single throw means that there are only two positions the switch can be in (one on, and one off state). Mechanical relays do not ...

A double pole single throw (DPST) switch is an on-off switch that opens and closes two contacts with a single motion. Double throw (DT) switches are two-way devices. Double throw relays have three ...

It is also important to consider a relay switch's number of distinct positions, also known as throws. Single throw (ST) switches are open in one position and closed in another. For example, a single ...