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RC Snubber



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3,67 €

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Еnergy absorbing circuits are used to suppress the voltage spikes caused by the circuit's inductance when a switch, electrical or mechanical, opens.

To be used for all Shelly relays which are restarted when switching on induction loads such as fans, motors, rollers, or those that cause voltage spikes during power on.

RC snubber should be wired between the Output and Neutral of the circuit. 

The RC Snubber is a component that comprises a resistor (R) and a capacitor (C) connected in series. It effectively mitigates voltage spikes that can occur during the switching of inductive loads 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.

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


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


Power supply AC 230V ±10%, 50Hz
Power supply DC No
Compatible with all Shelly relays
Size 27 mm x 17 mm x 8 mm




0.1 µF


100 Ω

Power consumption:

1/2 W

Rated voltage:

600 VAC

Wiring diagram example

Amortiguador de arranque electrico


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RC Snubber

RC Snubber

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