CB Class Automatic Transfer Switch Output frequency: 50Hz Output type: 4Poles Output current: 63A Output voltage: 110V, 220V, 380V, 440V Output power: >500W Input voltage: 110V, 220V, 380V, 440V High reliability and safety Service life reaching above 8, 000 times Superior electro-magnetic compatibility CE- and CCC-approved Rated current: 63A Poles: 2Poles, 3Poles and 4Poles Suitable for shift of two-way power, transfer of load equipments and safe isolation Certifications: IEC60947-3 and GB14048.3 standards