application scenarios:

PC-grade ATS is primarily used in high-risk scenarios requiring uninterrupted power supply, such as hospital ICUs, operating rooms, data center core servers, and fire protection control systems; CB-grade ATS is commonly employed in commercial buildings, office complexes, industrial facility emergency lighting systems, and standard server rooms where basic circuit protection is essential. As a core component of dual-power redundant architectures, the ATS switch ensures uninterrupted power supply for critical equipment in civilian, industrial, and high-end sectors, and is a mandatory component specified in fire safety and electrical design standards.