A 9 pin toggle switch is commonly used in various applications to control the electrical circuits. It is a type of switch that has nine terminals or pins that can be connected to different components of an electrical circuit. In this article, we will discuss the wiring diagram of a 9 pin toggle switch and provide some FAQs related to its usage.
Wiring Diagram
The wiring of a 9 pin toggle switch depends on the specific application and the components connected to it. However, some common wiring configurations are as follows:
DPDT (Double Pole Double Throw) Switch
A DPDT switch is a type of switch that has two poles, each with two throws. The poles are connected to two different circuits, and the throws can switch between those circuits. The wiring diagram of a 9 pin DPDT toggle switch is as follows:
| Pin | Description | Connection |
| 1 | Pole 1, throw A | Connected to circuit 1 |
| 2 | Pole 1, throw B | Connected to circuit 2 |
| 3 | Pole 2, throw A | Connected to circuit 1 |
| 4 | Pole 2, throw B | Connected to circuit 2 |
| 5 | Common terminal of Pole 1 | Connected to ground or power source |
| 6 | Common terminal of Pole 2 | Connected to ground or power source |
| 7 | Indicator light (optional) | Connected to circuit 1 or 2, depending on desired indicator behavior |
| 8 | Indicator light common (optional) | Connected to ground or power source |
| 9 | Mounting tab | Connected to ground or left unconnected |
When the switch is in the up position (throw A), circuit 1 is connected to both poles of the switch, while circuit 2 is not connected. When the switch is in the down position (throw B), circuit 2 is connected to both poles, while circuit 1 is not connected. The indicator light, if used, can be wired to light up when either circuit is active, or only when a specific circuit is active.
SPDT (Single Pole Double Throw) Switch
A SPDT switch is a type of switch that has one pole and two throws. The pole is connected to a single circuit, and the throws can switch between that circuit and another. The wiring diagram of a 9 pin SPDT toggle switch is as follows:
| Pin | Description | Connection |
| 1 | Pole, throw A | Connected to circuit 1 |
| 2 | Pole, throw B | Connected to circuit 2 |
| 3 | Common terminal | Connected to ground or power source |
| 4 | Indicator light (optional) | Connected to circuit 1 or 2, depending on desired indicator behavior |
| 5 | Indicator light common (optional) | Connected to ground or power source |
| 6 | Mounting tab | Connected to ground or left unconnected |
When the switch is in the up position (throw A), circuit 1 is connected to the pole of the switch, while circuit 2 is not connected. When the switch is in the down position (throw B), circuit 2 is connected to the pole, while circuit 1 is not connected. The indicator light, if used, can be wired to light up when either circuit is active, or only when a specific circuit is active.
FAQ
What is a toggle switch?
A toggle switch is a type of electrical switch that has a lever, handle, or rocker arm that can be flipped up or down to control the electrical circuit. It is commonly used in various applications to turn on or off electronic devices.
What are the common types of toggle switches?
The common types of toggle switches include SPST (Single Pole Single Throw), SPDT (Single Pole Double Throw), DPST (Double Pole Single Throw), and DPDT (Double Pole Double Throw). The number of poles and throws determine the number of circuits that can be controlled by the switch.
What is the difference between a SPDT and a DPDT switch?
A SPDT switch has one pole and two throws, while a DPDT switch has two poles and two throws. This means that a DPDT switch can control two circuits at the same time, while a SPDT switch can control only one circuit.
What is the purpose of an indicator light in a toggle switch?
An indicator light is used to indicate the status of the switch or the circuit it controls. It can be wired to light up when the circuit is active, or to indicate which circuit is active when multiple circuits are controlled by the switch.
How do I wire a toggle switch?
The wiring of a toggle switch depends on the specific application and the components connected to it. However, it typically involves connecting the switch to the power source and the components that need to be controlled by the switch. Refer to the wiring diagram provided by the manufacturer or consult an electrician if you are unsure about the wiring.
Can I use a toggle switch to control high voltage or current?
Toggle switches are rated for a specific voltage and current, and exceeding these ratings can cause damage to the switch or the components it controls, and can also pose a safety hazard. Make sure to use a toggle switch that is rated for the voltage and current of your application and follow the manufacturer’s instructions for installation and usage.
In conclusion, 9 pin toggle switches are useful components that can control multiple circuits in various applications. It is important to understand the wiring diagram and the specific configuration of the switch before installing it in your circuit. Follow the manufacturer’s instructions and consult an electrician if you are unsure about the wiring or usage of the switch.
