Low-voltage drawer cabinet is a kind of switchgear used in power system, mainly used for control and protection circuit. It consists of multiple drawers, each of which can be installed and maintained independently. The main features of low-voltage chests of drawers are high reliability and safety, but also flexibility and scalability. The main components of the low-voltage drawer cabinet include drawers, switch equipment, protection equipment, control equipment, measurement equipment, etc. Each drawer is equipped with different equipment to meet different power system needs. The switch equipment of low-voltage drawer cabinet usually uses air circuit breaker or vacuum circuit breaker, and the protection equipment includes fuse and relay. Control devices and measurement devices include buttons, indicators, meters and sensors.