... AC50/60Hz, voltage up to 400V three-phase system and voltage up to 230V single-phase system, total current 63A ... Surface Installation b. Concealed Installation3.1.2 Divided according to users no.a. single line: 2, 4, 6 ... Protective level: IP30;3.2.4 Resistance to fire and abnormal heat capacity: 650°C/ ... )4. Structure features4.1 Plastic panel, easy to install, safe and reliable, attractive appearance4.2 ...