High Efficiency Dual Position Switching: PC-level dual-power automatic transfer switch, dual-position design for 50-60Hz AC systems, when the main power supply fails, the backup power supply switching speed is less than 50 ms Wide Temperature Stable Operation: Working temperature from -5℃ to +40℃, storage temperature from -25℃ to +55℃, and short-time tolerance of +70℃, adapting to the needs of power conversion in a variety of environments Flexible Installation Options: Pollution level 3, support for vertical or horizontal installation in cabinets, regardless of space constraints, to meet a variety of installation scenarios, adapted to different circuit layouts Strong Specification Performance Configuration: Rated current 63A, insulation voltage 690VAC, rated short circuit current limitation 50KA, in accordance with IEC60947-6 standard, to cope with complex power conditions Installation Note: When the ambient temperature is +40℃, the relative humidity of the installation site should not exceed 50%. The lower the temperature, the higher the relative humidity, maintenance inspection after 6 months of first use