The ATS dual power automatic switch cabinet can realize the fast on-load switching of two power sources. It can be used for first-level loads specified by the state, such as high-rise buildings, post and telecommunications, coal mine ships, industrial lines, medical and health, military facilities, etc. ATS is mainly used in emergency power supply systems to automatically switch the load circuit from one power supply to another (backup) power supply to ensure that important Load continuous and reliable operation. Therefore, ATS is often used in important electrical places, and its product reliability is particularly important.