Understanding the Dpdt Switch Wiring Diagram
A Dpdt Switch Wiring Diagram is a schematic that illustrates how to connect a Double Pole Double Throw switch into an electrical circuit. This type of switch is characterized by having two independent circuits that can be individually switched between two different connection points. Think of it as having two light switches in one unit, each controlling a separate set of wires. The core functionality of a Dpdt switch lies in its ability to interrupt or connect two separate circuits at the same time. This makes them incredibly versatile. For example, you could use a Dpdt switch to:- Reverse the polarity of a DC motor, allowing it to spin in both directions.
- Control both the main power and a pilot light for a device simultaneously.
- Switch between two different power sources for a single output.
| Terminal Type | Description |
|---|---|
| Common (COM) | These are the input terminals. They receive power or the signal. There will be two COM terminals, one for each pole. |
| Normally Open (NO) | These terminals are disconnected from the COM when the switch is in its default position. When the switch is thrown, they connect to the COM. |
| Normally Closed (NC) | These terminals are connected to the COM when the switch is in its default position. When the switch is thrown, they disconnect from the COM. |