14+ Double Pole Double Throw Switch Diagram. Spdt (single pole double throw). Below is an example of a circuit which utilizes a single pole double throw switch.
Basically two spdt switches, which can control two separate circuits, but are always switched together by a single actuator. The contact 1 and 4 are. Single pole double throw (spdt) switch.
Electrical switches have mechanical contacts or relays.
14+ Double Pole Double Throw Switch Diagram. The sa630 is a very versatile part and can be used in many applications. Spdt (single pole double throw). Double pole, double throw (dpdt) switches allow control from three or more locations. As you can see in the schematic the 12v battery (or use other voltages) is connected with the plus at terminal t1 and minus at terminal t2.