It is applicable to residential buildings, hotels, hospitals, schools and other places that need to measure electricity with AC 50HZ and voltage of 230/400V. Air circuit breaker or leakage circuit breaker is installed in the box as overload and short circuit protection of lines and electrical appliances, and can also avoid personal accidents caused by electric shock. The meter box is divided into two types: surface mounting (suspended type) and concealed mounting (embedded type). It is composed of box, door, air circuit breaker, watt-hour meter, etc. The box is made of high-quality electrolytic plate by pressing, bending and welding. The power consumption data shown on the watt-hour meter can be observed and recorded through the glass observation window on the door. The incoming and outgoing lines of the box are convenient for the installation of the box and the centralized management of the watt-hour meter.