High and low voltage power distribution ark just as its name implies is the electricity power supply system for electric power distribution, control, measurement and connection of the cable distribution equipment, power supply bureau, substation are commonly with high voltage switch cabinet, then the low voltage side of transformer step-down leads to the low voltage power distribution cabinets, low-voltage distribution cabinets in to the electricity switchboard, control box, switch box, Inside is by a number of switches, circuit breakers, fuses, buttons, indicators, instruments, wires and other protective devices assembled into a body to achieve the design of the functional requirements of the distribution device equipment. Commonly known as: high and low voltage switchgear or complete sets of high and low voltage electrical equipment.