Description Feature: The outer casing of the switch is made of flame retardant material, which is resistant to high temperature, is not easily deformed, and is safer 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, reliable 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 special cases, automatic switching is not required, and manual switching can also be set by yourself. Specification: Rated frequency: 50Hz/60Hz Electrical level: PC level Number of poles: 4P Package list: 1 * Switch Note: The actual product color may deviate from the photo due to light. There may be a slight deviation in the measurement of product.