This Easy9 product is a residual current circuit breaker (RCCB). It is a 4P circuit breaker with 63A In rated current, 300mA earth leakage sensitivity and AC type protection class. This product protects against electrical shock by indirect contact and fire hazards. It also has protection against fire hazards due to persistent earth fault current. This product has a positive contact indications with fault tripping indication on the front panel by the position of the handle (0-I engraved). This is dedicated for residential and small commercial buildings market segment. This product is compliant with IEC 61008-1 standard. The (Im/IΔm) rated breaking and making short circuit capacity is 500A. The (Inc/IΔc) conditional rated short circuit current is 4500A. It has an electrical endurance going up to 2000 cycles and a mechanical endurance going up to 5000 cycles. The Ue operational voltage is 400VAC. The Ui rated insulation voltage is 440VAC. The Uimp rated impulse withstand voltage is 4kV. The frequency is 50Hz. It is DIN rail mountable. The width in 9mm pitches is 8. The product color is light grey (RAL7035). The dimensions are (W) 72mm x (H) 82mm x (D) 72mm. According to IEC 60529 standard, the degree of protection is IP20 and IP40 in enclosure. The operating temperature is from -25°C to 60°C. The storage temperature is from -40°C to 85°C.