A rotary switch is a switch operated by rotation. These are often chosen when more than 2 positions are needed, such as a three-speed fan or a CB radio with multiple frequencies of reception or "channels".

Rotary switches are selected by the number of positions, number of decks, poles per deck, mounting type, contact circuit configuration, throw angle, actuator type and current and voltage ratings. Some rotary switches include adjustable stops or can rotate continuously.

This article describes the working principle, circuit diagram, types, and interfacing of one of the types of mechanical switches called a rotary switch. Rotary switches are multifunctional electromechanical switches that can be a great alternative to pushbutton switches.

Rotary switches move in a circle and can stop in several positions. They are used to control many different circuits with a single switch. These devices have some advantages over other switches since turning the actuator can turn circuits on or off depending on the position and many different actuation positions are possible.

Feb 3, 2023 · Rotary switches are used to connect a functional circuit within a device to a source of electricity. The electrical charge enters the switch and is then directed to whichever circuit is currently selected by the switch.

Choose from our selection of rotary switches, including over 225 products in a wide range of styles and sizes. Same and Next Day Delivery.

Oct 26, 2023 · Modern rotary switches can handle complex switching operations, integrating seamlessly with digital interfaces and software control systems. The latest designs include features like LED indicators, push-button actuation, and programmable positions to improve usability and precision.

The rotary switch is a type of electrical switch and a primary electromechanical device that is utilised to regulate a number of circuits by rotating the switch's actuator only. A rotary switch may be more complex than a simple switch that is designed to have only two states – on and off.

Oct 27, 2024 · A rotary switch is an electrical switch operated by rotating a knob or lever, allowing the selection of different circuits or functions. It consists of a rotating shaft connected to a movable contact that makes connections with fixed contacts arranged in a circular pattern.

Mar 8, 2025 · What is a Rotary Switch? The rotary switch allows the user to select between various positions simply by turning a lever or knob. The rotary switch controls the flow of electrical current and the state of connected devices. Typically, the position of a rotary switch corresponds with a particular function or mode within the circuit.