The Types Of Rocker Switch
Apr 04, 2023
A rocker switch is a type of electrical switch that brings a user-friendly, on/off, or open/closed functionality to various devices. It's a widely used component in different electronic devices for easy operation. A rocker switch is named so because of its design, which consists of a rocker arm attached at the bottom and two terminals on the top. There are different types of rocker switches, and each has a unique design and function. This article will discuss the various types of rocker switches available in the market and their features.
1. Single-pole Single-throw (SPST) Rocker Switch
The Single-pole Single-throw (SPST) rocker switch is the most basic type of rocker switch. As the name suggests, it has a single pole and a single throw. This means that it has only one contact that makes or breaks a circuit when the switch is turned on or off. It is ideal for simple applications such as turning a light on or off. The switch is relatively small, and it is effortless to install.
2. Single-pole Double-throw (SPDT) Rocker Switch
The Single-pole Double-throw (SPDT) rocker switch has a single pole and two throws, and it is suitable for a variety of applications that require two circuits to be controlled independently. The switch has two connections, and it can either connect or disconnect these connections at the same time, making it an ideal switch for applications such as manual motor control.
3. Double-pole Single-throw (DPST) Rocker Switch
The Double-pole Single-throw (DPST) rocker switch has two poles and a single throw. It has four terminals that are used to connect two circuits. It is commonly used in applications such as inverter control and electric motor switching.
4. Double-pole Double-throw (DPDT) Rocker Switch
The Double-pole Double-throw (DPDT) rocker switch has two poles and two throws. This means that it has six terminals used to connect two independent circuits. It is ideal for applications that require a single switch to control multiple circuits. This switch is commonly used in applications such as reversing motors.
5. Momentary Rocker Switch
The Momentary rocker switch is designed to stay on only when the user is pressing the switch. It is often used in applications that require a switch to be held down temporarily, such as in automotive applications. It can also serve as a reset switch for a device.
6. Illuminated Rocker Switch
The Illuminated rocker switch has a light that lights up when the switch is turned on. It is often used in applications where the switch needs to be automatically visible in low light. It is commonly used in automotive applications, such as headlights or fog lights.
7. Waterproof Rocker Switch
The Waterproof rocker switch is designed to be waterproof, making it ideal in applications that are exposed to fluids such as boats or automotive. It has a rubber gasket surrounding the switch body that seals against the mounting surface.
8. Momentary Illuminated Rocker Switch
The Momentary Illuminated rocker switch is a switch that is both momentary and illuminated. It is often used in automotive applications where the switch needs to be held down while also being visible in low light situations.
In conclusion, the type of rocker switch to use depends entirely on an individual's needs, preferences, and the application to be used. The above types are some of the most common rocker switches in the market today, and each has its unique features that make it suitable for specific applications. By knowing the application and required features, one can easily choose the right rocker switch that suits their needs.