1. Strong safety: Due to the high rated current, it can provide better protection effect and prevent fire and electric shock accidents caused by overload or short circuit. At the same time, residual current operated circuit breakers can also detect leakage and cut off the power supply in a timely manner to avoid greater losses.

2. High reliability: Due to the use of advanced electronic technology and mechanical design, this circuit breaker is more stable and reliable compared to traditional electromagnetic circuit breakers. During normal use, the failure rate is low and maintenance costs are relatively low.

3. Economical and practical: Residual current operated circuit breakers with a rated current of 20 are moderately priced and suitable for electrical engineering projects of various scales. In addition, its installation and use are also very convenient and do not require special professional skills.

4. Multifunctionality: In addition to basic protection functions, some models of circuit breakers also have other additional functions, such as remote monitoring and control, automatic reclosing, etc., which can improve system reliability and reduce power outage time.