This Acti9 ID K product is a biconnect residual current circuit breaker (RCCB). It is a 4P circuit breaker with 40A In rated current, 30mA earth leakage sensitivity and A type protection class. This product protects against electrical shock by direct or indirect contact and fire hazards. There is a test button used to check the residual current device is operating correctly. The connection is made downstream by biconnect comb busbar or upstream/downstream by tunnel terminals. This product is compliant with IEC/EN 61008-1 standard. The (Im/IΔm) rated breaking and making short circuit capacity is 500A. The (Inc/IΔc) conditional rated short circuit current is 4.5kA. It has an electrical endurance going up to 2000 cycles and a mechanical endurance going up to 5000 cycles. The Ue operational voltage is 380VAC to 415VAC. The Ui rated insulation voltage is 440VAC. The Uimp rated impulse withstand voltage is 4kV. The frequency is 50Hz or 60Hz. It is DIN rail mountable. The width in 9mm pitches is 8. The product colour is white (RAL9003). The dimensions are (W) 72mm x (H) 81mm x (D) 68mm. According to IEC 60529 standard, the degree of protection is IP20 and IP40 in enclosure. The operating temperature is from -25°C to 40°C. The storage temperature is from -30°C to 70°C.