This product is applicable to the power supply system of two-way power supply (common power supply N and standby power supply R or generator power supply R) with AC 50Hz, 400V and below and rated current up to 3200A and below. In order to ensure the reliability and safety of power supply, the automatic switching between power supplies is carried out due to the failure of one-way power supply (power failure, undervoltage and phase failure). The product is widely used in high-rise buildings, residential areas, airports, wharves, fire control, metallurgy, chemical industry, textile and other important places where no power outage is allowed, to achieve unattended continuous power supply.

The product conforms to the standard: iec60947-6-1 《low voltage switchgear and control equipment automatic transfer switchgear》、GB t14048.11 《low voltage switchgear and controlgear automatic transfer switchgear》.

This product is PC grade.