Tổng Quan MCCB C&S (APTOMAT C&S) Compliance with IEC 947-2Basic manually operation CB includes front connection and Micrologic 2.0 trip unit.Basic electrical operation CB includes front connection, micrologic 2.0, motorise mechanism (220/240 VAC), closing release XF (220/240 V AC), shunt trip MX (220/240 V AC)Electrical auxilary and accessories is optional When installing a circuit breaker, safety clearances must be kept between the breaker and panels, bars andother protection devices installed nearby. These safety clearances are depend on the ultimate breaking capacityand are defined by tests carried out in accordance with standard IEC 60947-2.When a short circuit interruption occur, high temperatures pressures are present in and above the arc chambersof the circuit-breaker. In order to allow the pressure to be distributed and to prevent fire and arcing or shortcircuit currents, safety clearances are required