The outer casing of the switch is made of retardant material, which is resistant to high temperature, is not deformed, and is to use. Sensitive response, millisecond fast switching of power supply. Rail-mounted installation, simple and convenient, effectively protect your electricity safety and stability. Reasonable structure, small size, beautiful appearance, long service life. Noise-free operation, simple operation, performance. Double power automatic switching switch is to switch the two power supply, divided into the common power supply and standby power supply. When the common power supply is cut off, the backup power supply will be restored to the common power supply after the common power is called. In cases, automatic switching is not required, and manual switching can also be set by yourself. Rated operating current: 100A Rated operating voltage: 230V AC Rated frequency: 50Hz/60Hz Insulation voltage: 690V, 50Hz Electrical level: PC level Number of poles: 2P Size: About 5cm Color: White Material: plastic + metal Package Contents: 1 * Automatic Transfer Switch Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.