How To Wire 2 Limit Switches In Series

By | August 14, 2022



The complexity of wiring multiple limit switches in series can be daunting. But with the right knowledge, it doesn't have to be. Knowing how to correctly wire two limit switches in series is a skill that a few simple steps can help anyone master.

It starts with choosing the correct type of switch for your project. Limit switches come in a variety of configurations, but for most installations, a snap-action type switch is recommended. Once these are in hand, carefully mounting them to the product or machine is crucial. All wires must be properly protected from corrosion; high quality insulated wire should be used and secured with lock nuts. With both mounted, it’s time to wire them in series.

The key is to make sure that each switch is wired so that if one goes off, the other will follow. Depending on the power source, you may need to use either AC or DC current when wiring. A DC has two hot wires, a red and a black, while AC power has three, a red, a black, and a neutral or white. With the power source wired, the switches can then be wired in series, with the active lead from the power source going directly to the first switch, then from there to the second switch, and finally from the second switch back to the load. Take care to ensure all connections are secure, and that none of the active leads touch each other. By double checking your work, you can be sure that you’ve wired everything properly!


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