In summary, current limit switches protect host devices from faulty load conditions by providing internal current limiting up to a specified threshold. To choose a suitable current limit switch for an application, select a device with an adequate voltage range, a low integrated FET RON to handle the maximum anticipated power dissipation, an appropriate current limit threshold whether it is preset or user-adjustable, and with the necessary protection features to protect circuitry. These parts are widely used to increase the robustness and reliability in electronic circuit designs with various end applications.

