What is the principle of RC snubber?

[DelAnderson]

Principle: It utilizes the characteristic that voltage across a capacitor cannot change abruptly, and employs a resistor for energy absorption. It is an electronic protection circuit used to absorb transient high voltages. Below is relevant information about RC snubbers: 1. It can effectively suppress voltage oscillations and surge currents generated during high-voltage operations, rapidly attenuating high-frequency oscillation currents, reducing impact on load equipment, and being highly effective in preventing false triggering of high-voltage protection due to surges. 2. The RC snubber is connected between the lower end of the current transformer on the circuit breaker's outgoing line and the ground on the side of the protected electrical equipment. The closer it is to the protected equipment, the better the effect. 3. The RC snubber is a maintenance-free device. When withdrawing or inspecting it after use, it must be fully discharged until completely depleted; otherwise, it may endanger personal safety.