Terminals are basic accessories, and their functions are derived from screws and screws and applied in the field of electrical connection and control. They have the requirements of firmness, safety, beauty and speed. With the increase of labor costs in social progress, the requirements for terminal blocks are also getting higher and higher. Its main manifestations are as follows:

1. Control cabinet (distribution box, control box, control panel, console, DC panel, power control box)
2. Components (instrumentation, lighting, controller power supply, communication control)
(1) Control box industry: complete sets of electrical appliances, complete sets of power protection, power generation control, power control boxes and other control integrated systems include control components such as boxes, switches, fuses, meters, instruments, and signal control, and there are many control lines for large currents. Mainly use rail terminals;
(2) Component accessories, instruments in the control cabinet, controllers, relays, electricity meters, switch control systems and other components that use electricity and control access and output terminals and independent lighting, power supplies, motors, instruments and meters, The terminals for the access and output of power consumption and control functions of automation equipment control.