Hello, landlord. Personally, I have used Hagrid Electric MCU series air switch circuit breakers. The design materials and workmanship of this household circuit breaker are very good. When it comes to electricity safety, it is easy to break down if it is broken. Short-circuit fire, electric leakage and electric shock caused by high load power consumption are no longer afraid. German quality is quite trustworthy. I hope the answer will help you. I hope it can be adopted. Thank you.