Electrical Symbols: Switches & Relays

Front

2 P___ C________

Back

A 2 Pole Contactor is a device used to control the flow of electricity in a circuit, typically used for switching applications.

Front

3 P___ C________

Back

A 3 Pole Contactor is a device used to control electrical power circuits, consisting of three poles for switching.

Front

S_____ P___ S_____ T____ S_____

Back

A Single Pole Single Throw Switch is a switch that connects or disconnects a single circuit.

Front

S_____ P___ D_____ T____ S_____

Back

A Single Pole Double Throw Switch is a switch that can connect a single input to one of two outputs, allowing for two different circuit paths.

Front

D_____ P___ S_____ T____ S_____

Back

Double Pole Single Throw Switch

Front

D_____ P___ D_____ T____ S_____

Back

Double Pole Double Throw Switch is a switch that can connect two different circuits to a common output, allowing for multiple configurations.

Front

P___ B_____ S_____

Back

Push Button Switch is a switch that is activated by pressing a button.

Front

O__ S_____

Back

Off Switch- a switch that disconnects the power supply, turning off the device or circuit.

Front

C______ T_________ T__________ Switch

Back

Cooling Thermostat Temperature Switch

Front

H______Thermostat

Back

Heating Thermostat-Temperature switch that opens when the temperature rises.