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A **rocker switch** is a type of electrical switch that consists of a lever or rocker that can be toggled between two positions: "on" and "off." They are sometimes referred to as a **“on off switch”**. You can learn more on how rocker switches work in our comprehensive [Rocker Switch Guide](https://uk.rs-online.com/web/content/discovery/ideas-and-advice/rocker-switches-guide).

Here's some useful information on how to use rocker switches:

- Function: Rocker switches are primarily used to control the flow of electric current to devices or circuits. They act as a bridge between the power source and the load (device) you want to control.
- On and Off Positions: The rocker switch has two stable positions: "on" and "off", hence the name “on off switch”. In the "off" position, the switch interrupts the electrical circuit, preventing the current from flowing to the load. When you toggle it to the "on" position, the switch closes the circuit, allowing the current to reach the load.
- Wiring: To use a rocker switch, you need to connect the switch terminals to the relevant wires. Typically, a rocker switch has three terminals: a common terminal (also called the "COM"), a normally open terminal ("NO"), and a normally closed terminal ("NC"). The common terminal is where you connect the power source or the live wire. The NO and NC terminals are for connecting the load or to the device you want to control.
- Wiring Configurations: The wiring configuration will depend on your specific application and the desired behaviour of the switch. For instance:
    
    - If you want the load to be energized when the switch is in the "on" position, you would connect the live wire to the COM terminal and the load wire to the NO terminal.
    
    - If you want the load to be energized when the switch is in the "off" position, you would connect the live wire to the COM terminal and the load wire to the NC terminal.
- Installation: Rocker switches are typically mounted onto a panel or a switch box using screws or clips. Make sure to follow the manufacturer's instructions for proper installation.
- Applications: Rocker switches are widely used in various devices and systems, including household appliances, automotive applications, industrial machinery, and electronic equipment. They provide a convenient and straightforward way to control the power supply to different components.
- Considerations: When choosing a rocker switch, consider factors such as the voltage and current rating, the switch's durability, and the environmental conditions in which it will be used.


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Rocker Switches, On Off Switch | RS

Rocker Switches

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Illuminated rocker switches are used in a wide range of industrial applications. They provide a clear visual indication when the switch is in the on position. There are two main types of switch, fully illuminated where the actuator is completely lit or partially lit where the actuator features a small, illuminated dot.RS offers a comprehensive selection of high-quality panel mount LED illuminated rocker switches. They are supplied to us by well-known brands including APEM, Arcolectric, Marquardt, Carling Technologies and of course RS PRO.Features and Benefits<ul><li>Robust and reliable</li><li>Easy to install snap-in for secure panel retention</li><li>Round, rectangular, or square industry-standard cut-out sizes</li><li>Choice of red, green, amber, or blue Illumination</li><li>Single pole or double pole contact configurations</li><li>Momentary or latching switch operation</li><li>AC or DC voltages</li><li>IP Ratings including Splash proof IP40, IP44 or fully waterproof IP68 versions</li><li>Solder-lug or push-on quick-connect terminals</li></ul>Where would I use one?Rocker switches are one of the most common types of switches used in the market today. Due to their simple design and easy operation, they are perfect for repairing existing equipment or for new designs. Some of the most common are<ul><li>Electrical appliances</li><li>Pumps, pressure washers and steam cleaners</li><li>Medical equipment</li><li>Computers and peripherals</li><li>Audio and video equipment</li><li>Automation and control panels</li></ul>

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On-Off rocker switches are a type of rocker switch that is on in either the left- or off in the right-hand position. The panel mount switches are versatile and are used in many industrial, commercial, or domestic applications. On-Off rocker switches have a momentary or latching switch operation, each type working in a different way.RS offer a great selection of high-quality on-off rocker switches from well-known brands such as APEM, Arcolectric, Bulgin, TE Connectivity and of course RS PRO.Features and Benefits<ul><li>Easy to install and maintain</li><li>Illuminated and Non-illuminated versions</li><li>AC or DC voltage ratings</li><li>Single pole (SPST) or Double pole (DPST) contact configurations</li><li>Quick connect, solder or PCB pin terminations</li><li>IP Ratings including IP40 splash-proof to IP68 sealed</li></ul>What is the difference between momentary and latching operation?Latching rocker switches are activated by the user and will remain in any of the on positions and will remain in that position until it is switched off. They are also known as maintained or stay put.Momentary rocker switches are activated by the user and will only remain in the on position while force is applied to the actuator. As soon as the force is removed the switch will return to the off position. Switches are often displayed like (on)-off. Anything with brackets is momentary or sometimes called spring return.

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Marquardt Rocker Switches | RS

Looking for a high-quality rocker switch for your application? Well, you have come to the right place. Here at RS, we are pleased to offer you a great selection of switches from the well-known brand Marquardt. Robust and reliable our Marquardt rocker switches are suitable for a wide range of industrial and commercial applications. Our range includes both illuminated and non-illuminated versions with neon or LED technology.Features and Benefits<ul><li>Easy to install and maintain</li><li>Long electrical and mechanical life</li><li>Red, green, or orange rocker illumination</li><li>Industry-standard rectangular, square, or round cut-outs</li><li>AC or DC voltage ratings</li><li>Quick connect push-on, solder lug or PCB terminals</li><li>Various contact configurations including SPST, SPDT. DPST or DPDT</li><li>Latching or momentary switch operation</li><li>Ingress protection ratings including IP40, IP65 and IP67</li><li>Plain or marked legends</li></ul>Where would I use one?Rocker switches are one of the most common types of devices used in industry today. Versatile and simple in design they are ideal for a whole host of new designs or for the repair of existing panels, machinery, and equipment. They are typically used in:<ul><li>Automation and control panels</li><li>Medical equipment</li><li>Audio and video equipment</li><li>Pumps, pressure washers and steam cleaners</li><li>Electrical appliances</li></ul>

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Waterproof rocker switches are sealed, meaning they prevent the ingress of water and dust from entering the switch itself. They are vital in applications where the switch is situated outside or in an area that could be exposed to moisture or water. Often incorporating rubber gaskets that seal against the mounting surface making them watertight.RS offers a comprehensive range of high-quality waterproof rocker switches from industry-leading brands such as APEM, Carling Technologies, TE Connectivity, and of course RS PRO.Features and Benefits<ul><li>IP67, IP68 and IP68s rated</li><li>Robust and reliable</li><li>Resistant to vibration and shock</li><li>Easy to install and maintain</li><li>Illuminated and Non-illuminated versions</li><li>AC or DC voltage ratings</li><li>Single pole (SPST, SPDT) or Double pole (DPST, DPDT) contact configurations</li></ul>Where would I use one?Waterproof rocker switches are used in a vast array of industrial and commercial applications where vehicles, machinery and tools and equipment are exposed to water and the elements. Some of the most common are<ul><li>Construction machinery and site vehicles</li><li>Boats and marine equipment</li><li>Pumps and pressure washers</li><li>Laboratory and medical equipment</li><li>Kitchens and catering equipment</li></ul>

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On off Rocker Switch | RS

On-Off rocker switches are a type of rocker switch that is on in either the left- or off in the right-hand position. The panel mount switches are versatile and are used in many industrial, commercial, or domestic applications. On-Off rocker switches have a momentary or latching switch operation, each type working in a different way.RS offer a great selection of high-quality on-off rocker switches from well-known brands such as APEM, Arcolectric, Bulgin, TE Connectivity and of course RS PRO.<h2>Features and Benefits</h2><ul><li>Easy to install and maintain</li><li>Illuminated and Non-illuminated versions</li><li>AC or DC voltage ratings</li><li>Single pole (SPST) or Double pole (DPST) contact configurations</li><li>Quick connect, solder or PCB pin terminations</li><li>IP Ratings including IP40 splash-proof to IP68 sealed</li></ul><h2>What is the difference between momentary and latching operation?</h2>Latching rocker switches are activated by the user and will remain in any of the on positions and will remain in that position until it is switched off. They are also known as maintained or stay put.Momentary rocker switches are activated by the user and will only remain in the on position while force is applied to the actuator. As soon as the force is removed the switch will return to the off position. Switches are often displayed like (on)-off. Anything with brackets is momentary or sometimes called spring return.

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From Bulgin, a selection of high-quality rocker switches are designed for panel mounting. Bulgin rocker switches are robust and reliable and have been manufactured and tested to meet the latest industry standards and approvals. Bulgin rocker switch range provides you with the ideal switch solution for repairs or new projects for most electrical appliances and equipment.Features and Benefits<ul><li>Easy to install, connect and maintain</li><li>Long electrical life</li><li>High mechanical strength</li><li>Quick connect terminals</li><li>Single Pole (SPST) or Double Pole (DPST) contact configurations</li><li>Momentary or latching switch operation including On-On, On-Off and (On)-Off-(On)</li><li>High inrush options, up to 16A</li></ul>Typical ApplicationsRocker switches are one of the most popular choices of switch used in the world today. Due to their simple design and easy operation. Some of the most common are<ul><li>Power supplies</li><li>Audio and video equipment</li><li>White goods and domestic appliances</li><li>Computers and peripherals</li><li>Automotive</li><li>Medical equipment</li></ul>

Molveno Rocker Switches

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