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    Sensata / Crydom Solid State Relays

    Make your circuit jump in and out of action at the flick of a switch with a solid state relay. Solid state relays are a newer type of electronic relay which differ from older electromechanical relays in that they contain no moving parts. The moving parts used to open and close circuit contacts in electromechanical relays are prone to wear and tear, meaning that they'll need to be replaced more quickly. As solid state relays don't have these parts, they are more reliable and last longer. They're also not prone to arcing and contact bounce, meaning that they're more precise. Sensata / Crydom solid state relays are the favourite of electrical engineers and robotics technicians alike, as their slick switches control machinery with fast and reliable switching.

    What are solid state relays used for?

    Solid state relays are incredibly versatile, as such they can be found in all manner of electrical installations. Some examples include:

    • Home appliances: These tiny tickers can be found in home appliances, such as washing machines, tumble dryers, and ovens, where they control fans, motors, and pumps.

    • Industrial automation: These speedy switches are perfect for automating industrial processes, where they can continually switch machinery on and off.

    • Robotics: These reliable relays bring robotics to life by controlling the movement of robotic arms.

    • Security systems: These capable controllers can open and close security gates and activate alarms when intruders are detected.

    Which solid state relay is right for me?

    To find the best solid state relay, you'll need to consider the application in which you'll use it. There are relays with different contact configurations, control voltages, load currents, and switching types, each suited to the many different potential uses of solid state relays. We've listed some considerations below, but for more information, check out our detailed guide to solid state relays.

    • Consider the contact configuration of your circuit. While most of our relays are SPST, we also have some relays with SP and SP-NC configurations.

    • Consider the electrical properties of your circuit. If the current or voltage exceeds the maximum value that the relay is rated for, it's likely to cause malfunction.

    • Consider the physical attributes of your installation. There are different mounting and terminal types to choose from, such as panel mount and screw terminal, as well as relays with smaller and larger overall dimensions.
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