Circuit Breaker Air Circuit Breaker Single Phase Din Rail Kwh Energy Meter Auto-recovery Function: When the single-phase circuit has an undervoltage, when the current is faulty, the line is cut off, and when it returns to normal, it automatically recovers Clear Display: This Electric Meter Single Phase Energy KWh Meter has voltage, current and power display to offer convenient use Provides Reliable Performance: This Air Circuit Breaker is designed with anti-thunder protection, it has stable performance Good Durability: This Single Phase Energy KWh Meter is made of high quality material, durable and long service life Multi-function Offers Safety Performance: This Single Phase Energy Meter has multi-functions, which is featured with overvoltage protection, undervoltage protection and current limiting protection