This Resi9 product is a low voltage miniature circuit breaker (MCB). It is a 2P circuit breaker with 2 protected poles and 40A-63A In rated current and C tripping curve. The Icn rated short circuit breaking capacity is up to 4500A at 400VAC conforming to EN/IEC 60898-1 standard. This product is compliant with EN/IEC 60898-1 standard. This miniature circuit breaker protects circuit against short circuit and overload current. The Resi9 is targeted to residential for individual and collective buildings. It has an electrical endurance going up to 10000 cycles and a mechanical endurance going up to 20000 cycles. The Ue operational voltage is 400VAC. The Ui rated insulation voltage is 440VAC. The operating frequency is 50Hz or 60Hz. It can be mounted on DIN rail for modular installation. Its width is 4 pitches of 9mm. The product colour is white (RAL9003). The dimensions are (W) 36mm x (H) 81mm x (D) 72mm. According to IEC 60529 standard, the degree of protection is IP20 and IP40 in enclosure. The operating temperature is -25°C to 60°C. The storage temperature is -40°C to 60°C.