Features: The switch housing is made of flame retardant material, which is resistant to high temperature, is not easy to be deformed, and is safer to use. Sensitive response, millisecond power supply fast switching. Rail mounting, simple and convenient, effectively protect your power security and stability. Dual power automatic switch is to switch two power supplies, which are divided into ordinary power supply and standby power supply. When the public power is turned off, the backup power will be restored to the public power after the public power is called. In special cases, there is no need to switch automatically, or you can set up manual switching by yourself. Reasonable structure, small size, beautiful appearance, long service life, no noise operation, simple operation and reliable performance. Specification: Rated Working Current: 100A Rated Working Voltage: 400V AC Rated Frequency:50/60Hz Insulation Voltage: 690V Electrical Grade: PC Level Pole Quantity: 3P Package List: 1 x Switch