Shelly RC Snubber Energy Absorbing Circuit

The Shelly RC Snubber is an essential accessory designed to protect sensitive electronic components within your Shelly devices from damaging voltage transients. It consists of a resistor and a capacitor connected in series, forming a protective circuit. This component effectively mitigates voltage spikes that commonly occur during the switching of inductive loads by providing a short-term alternative current path around the switching device. This action allows the inductive load to discharge safely, thereby preventing potential harm to the control circuitry and enhancing the overall performance and reliability of your electrical installations.

By integrating the RC Snubber into your system, you safeguard the operational integrity of your Shelly products. It ensures stable switching behaviour and reduces electromagnetic interference, which is particularly crucial in environments with fluctuating power conditions. This proactive measure significantly extends the lifespan of both the controlling device and the connected inductive appliance, making it a vital addition for any installation requiring robust surge protection.

Technical Specifications

• Part Number: SHELLY-RC-SNUBBER
• Circuit Configuration: Series resistor-capacitor (RC)
• Primary Function: Voltage spike suppression
• Compatibility: Designed for use with Shelly devices controlling inductive loads
• Connection Type: Wiring terminal connections

Key Features

• Surge Protection: Effectively clamps voltage spikes to safe levels during switching operations.
• Enhanced Reliability: Improves the operational stability and longevity of connected circuits and devices.
• EMI Reduction: Minimises electromagnetic interference generated by inductive load switching.
• Simple Integration: Straightforward wiring installation with clear terminal connections.
• Component Safeguard: Protects sensitive internal components of Shelly devices from electrical stress.

Use Cases

The RC Snubber is ideally suited for applications involving inductive loads where switching events generate significant voltage transients. Common implementations include residential and commercial appliances such as fans, refrigerators, air-conditioning units, and washing machines. It is particularly valuable in installations where motor-driven equipment is frequently cycled on and off, ensuring consistent performance and protecting the control electronics from premature failure. This makes it an indispensable component for automation systems managing HVAC equipment, industrial machinery, and household appliances with inductive characteristics.