Direct Online Switch

If you’re in the process of wiring up a new electrical system, or simply looking to upgrade your current setup, you may be wondering what a direct online switch is and how it works. In this post, we’ll provide a detailed overview of direct online switches, including how they differ from other types of switches, their advantages and disadvantages, and how to safely install and use them in your home or business. Whether you’re a seasoned electrician or a beginner looking to learn more about electrical systems, this post will provide all the information you need to make an informed decision about whether a direct online switch is right for you. So let’s get started!

Layout diagram

Wiring diagram


  • Contactor Switch 01
  • Push Button (NC, NO)  02
  • Overload 01

Procedure: First, draw the control circuit according to the DOL circuit. Then, draw the power circuit accordingly. Set the items of the control circuit. Then, check the circuit with a multi-meter and give power supply of 230V and check the circuit’s state. Then fix the items in the power circuit and test it with a multi-meter. Afterward, set the motor to the power circuit. Then, connect these circuits to the main power supply. 

Activity: When S1 activates, K1 contactor activates and starts the motor. You can switch the motor off from S0. 

Conclusion: Circuit activated correctly 

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