Rotary switches are widely used in various industries and applications due to their versatility and reliability. These switches are designed to control the flow of electricity by rotating a knob or lever to select different positions or functions. They are commonly used in electronic devices, industrial machinery, automotive applications, and many other fields.

In this article, we will explore some of the popular rotary switch product types available in the market. These switches come in different configurations, sizes, and specifications to meet the diverse needs of different industries. Let's dive into the details of these popular rotary switch product types.

1. Single Pole, Single Throw (SPST) Rotary Switch: The SPST rotary switch is the simplest form of a rotary switch. It has a single input and a single output terminal. When the knob is rotated, it connects or disconnects the input terminal to the output terminal. This type of switch is commonly used in simple on/off applications.

2. Single Pole, Double Throw (SPDT) Rotary Switch: The SPDT rotary switch has a single input terminal and two output terminals. It allows the user to select between two different output options by rotating the knob. This type of switch is commonly used in applications where a choice needs to be made between two options, such as selecting between two power sources.

3. Double Pole, Single Throw (DPST) Rotary Switch: The DPST rotary switch has two input terminals and a single output terminal. It allows the user to control two separate circuits simultaneously. When the knob is rotated, it connects or disconnects both input terminals to the output terminal. This type of switch is commonly used in applications where two circuits need to be controlled independently.

4. Double Pole, Double Throw (DPDT) Rotary Switch: The DPDT rotary switch has two input terminals and two output terminals. It provides the user with the ability to select between two different input/output combinations. This type of switch is commonly used in applications where multiple circuits need to be controlled and switched between different configurations.

5. Multi-Deck Rotary Switch: A multi-deck rotary switch consists of multiple decks or layers stacked on top of each other. Each deck has its own set of contacts and can be independently controlled. This type of switch allows for complex switching configurations and is commonly used in applications where multiple circuits or functions need to be controlled simultaneously.

6. Rotary Encoder Switch: A rotary encoder switch is a specialized type of rotary switch that provides digital output signals. It converts the rotational movement of the knob into digital signals that can be read by a microcontroller or other digital devices. Rotary encoder switches are commonly used in applications where precise position sensing or control is required, such as in robotics or CNC machines.

7. Rotary Selector Switch: A rotary selector switch is designed to select between multiple options or positions. It typically has multiple input and output terminals, allowing the user to choose from a range of different functions or settings. Rotary selector switches are commonly used in applications such as audio equipment, where different inputs or outputs need to be selected.

8. Rotary Wafer Switch: A rotary wafer switch consists of multiple wafers stacked on top of each other. Each wafer has its own set of contacts, and the rotation of the knob selects different combinations of contacts. This type of switch is commonly used in applications where multiple circuits need to be controlled simultaneously, such as in complex control panels or industrial machinery.

In conclusion, rotary switches are available in various types and configurations to suit different applications. From simple on/off switches to complex multi-deck switches, these products offer versatility and reliability in controlling electrical circuits. Understanding the different types of rotary switches can help users select the most suitable switch for their specific needs.