[Materials] Constructed from flame retardant pc material with silver contacts, this switch offers excellent insulation and conductivity for enhanced safety and reliability. [Emergency Power Support] Designed for critical power scenarios, this mini switch effortlessly transitions from primary to backup power, ensuring continuity and safety. [Wide Application] Crafted for stability and anti-interference, this switch is ideal for photovoltaic systems, homes, shopping centers, factories, laboratories, and more. [Seamless Power Transition] The double power automatic transfer switch offers both automatic and manual modes, ensuring uninterrupted power supply in milliseconds. [Efficient Installation] Specifically designed for 63a emergency power systems, it fits seamlessly into pz30 distribution boxes with a standard 35mm rail mount.