A RC Snubber is a device that is used to limit (or “snub”) voltage transients in electrical systems, it comprises a resistor (R) and a capacitor (C) connected in series. To be used for Shelly Plus 1 / 1PM and Shelly 2PM (sold separately) which are restarted when switching on induction loads such as fans, motors, rollers, or those that cause voltage spikes during switching on and effectively mitigating it by providing a short-term alternative current path around the switching device, so that the inductive load is safely discharged. The RC Snubber can protect sensitive components of your Shelly device from voltage spikes and improve the overall performance and reliability of the connected circuits. RC snubber should be wired between Output and Neutral of the circuit. You should connect RC Snubbers in parallel to inductive loads which you intend to switch with Shelly devices. Connect the RC Snubber as close to the inductive load as possible. Main applications The RC Snubber finds common applications with inductive loads, such as: Fans Refrigerators Air-conditioners Washing machines Tumble dryers Transformers LED light drivers Other devices with electrical motors
