A DPDT relay is a type of electronic relay that has two poles that can switch on and off electrical current. These are used in complex electronic circuits. They can be used to control both power and signal lines and can also be used in appliances. The type of relay used depends on the circuit it is used in.

There are four different types of DPDT relays. One type has three contacts on one side, the other has two. The middle contact on the left side is the common contact. The other two contacts are the changeover contacts. When there is no supply, the COM contact is connected to NC. When an operating voltage is applied, the coil energizes. The current flows through the contacts in the opposite direction.

The DPDT relay is the fourth type of simple switch. It has two sets of terminals: two common terminals and two independent coils. Each terminal has its own set of contacts. Using a single control signal to control the coil, a DPDT relay is ideal for applications that require a high current flow.

A DPDT relay works by receiving the input signal from a connected power source. It then acts like a conventional switch by passing the signal through the corresponding output.