2 Position Rocker Switch

A rocker switch is a type of switch that is commonly used in various electronic devices, machines, and appliances. It is also known as a rocker switch, a lever switch, or a snap switch. This type of switch works by connecting or disconnecting a circuit by flipping a lever or rocker that is attached to the switch.

A 21x15mm 3 position ON-OFF-ON rocker switch is a type of rocker switch that measures 15mm in length and 10mm in width. It is a small switch that is commonly used in small electronic devices or appliances. A 15x10mm rocker switch has a simple design that is easy to operate. It usually has two positions, ON and OFF, and can be used to control the power supply of a device.

The housing of a ON-OFF-ON rocker switch is usually made of plastic or metal. The plastic housing is lightweight and easy to mold, but it may not be as durable as a metal housing. The metal housing is more durable and can withstand more wear and tear, but it may be heavier and more expensive.

The 21x15mm 3 - position rocker switch is a versatile electrical component that offers enhanced control capabilities within a compact form factor. Measuring 21mm in length and 15mm in width, this switch is designed to fit into a variety of control panels and electronic devices while providing three distinct operating states for flexible circuit management.

Structure and Design

The physical dimensions of the 21x15mm 3 - position rocker switch strike a balance between ease of operation and space - efficiency. Its body is typically constructed from durable materials such as high - impact plastic or metal alloy, ensuring protection for the internal components and resistance to wear and tear. The surface features a rocking lever that is ergonomically designed for smooth and intuitive operation.

Internally, the switch consists of a set of electrical contacts and a mechanical linkage system. Unlike basic on - off switches, the 3 - position variant has additional contact arrangements to support three different connection states. It usually comes with multiple connection pins, often five or six, which are crucial for establishing electrical connections to different circuit paths corresponding to each position of the rocker.

Working Principle

In a standard configuration, the three positions of the rocker switch can be defined as “off,” “on position 1,” and “on position 2.” When the rocker is in the “off” position, the internal contacts are separated, creating an open circuit that prevents the flow of electricity. When toggled to “on position 1,” specific contacts are engaged, allowing current to flow through a designated circuit path, powering a particular set of components or functions. Moving the rocker to “on position 2” changes the contact configuration again, redirecting the current to a different circuit, enabling the activation of another set of functions or electrical loads.

This multi - position functionality is often achieved through a SPDT (Single - Pole, Double - Throw) or DPDT (Double - Pole, Double - Throw) design, depending on the complexity of the circuits it needs to control. In a SPDT 3 - position switch, one pole can switch between two different circuits in addition to the off state, while a DPDT version can control two separate circuits simultaneously in each of the three positions, providing even more extensive control options.