There are two types of commonly used distribution boxes, wooden and metal. Because metal distribution boxes have a higher protection level, they are more often used in metal. Classified according to structural characteristics and uses: (1) fixed panel switchgear, often called switchboard or power distribution screen. It is an open-type switchgear with a panel cover. It has a protective effect on the front. It can still touch live parts on the back and sides. The protection level is low. Substation is used for centralized power supply. (2) Protective (ie closed) switchgear refers to a low-voltage switchgear that is closed on all sides except the installation surface. The electrical components such as the switch, protection, monitoring and control of this cabinet are installed in a closed enclosure made of steel or insulation material, and can be installed on or off the wall. There can be no isolation measures between each circuit in the cabinet, and a grounded metal plate or...
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