A switch is an electrical component that controls the closure and disconnection of a circuit, mainly used to issue operating instructions to the automatic control system circuit, thereby achieving automatic control of power supply and distribution lines, lighting lines, motor control lines, etc. According to the different structures and functions, commonly used switches usually include open load switches, button switches, position detection switches, and isolation switches
The open load switch, also known as the rubber cover knife switch, is used as a distribution switch for low-voltage electrical lighting circuits, construction site power supply, agricultural machinery power supply, and branch circuits. It connects or disconnects the power circuit under load.
. Open load switches are mainly divided into two types based on the number of poles: two pole (250V) and three pole (380V)Closed type load switch, also known as iron shell switch, is a manual switch improved on the basis of open type load switch. Its operational performance and safety protection are superior to open load switches. Closed load switches are usually used in electrical equipment with a rated voltage of less than 500V and a rated current of less than 200A. The internal use of quick break springs in the enclosed load switch ensures that the shell cannot be closed when opened, improving the safety protection capability of the enclosed load switch
The combination switch, also known as a transfer switch, is composed of multiple sets of switches and is a rotary knife switch mainly used to connect or disconnect circuits. Combination switches have the advantages of small size, long service life, simple structure, and convenient operation, and are usually widely used in machine tools or other electrical equipment
The low-voltage lighting switch is mainly used to control the on and off status of the lighting lights in the lighting circuit. Low voltage lighting switches usually have relevant parameter information labeled on the back of the switch, which can be used to install them in a suitable environment
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