Has two terminals for spst single pole single throw or three for spdt single pole double throw has four terminals for dpst double pole single throw or six for dpdt double pole double throw controls a single circuit. A double pole switch is what you need to control a 240 volt device because 240 volt circuits have two hot wires.
![How To Wire Switches](http://waterheatertimer.org/images/attic2-single-switch-500.jpg)
How To Wire Switches
Single pole vs double pole light switch. However this switch has four terminal screws used to connect a 240 volt circuit two 120 volt circuits that share a common white wire and always has a ground terminal screw. Traditional plate grid plate and switches. Flat plate white insert. The difference between a single and double pole switch is that the latter controls two circuits at the same time. A single pole switch or breaker thermostat fuse block etc switches one hot leg of power while a double pole switches two hot legs of power and three pole switches three etc. Traditional plate black insert.
Two for incoming hots and two for outgoing hots. Traditional plate black insert. Autoplay when autoplay is enabled a suggested video will automatically play next. Traditional plate white insert. This terminology applies to toggle switches rocker switches and push button switches. Flat plate grid plates and switches.
It has four terminals. Flat plate black insert. The double pole light switch also has on and off markings and like the single pole also turns off lights from a single location. Capable of controlling two circuits simultaneously.