Feature of Resilient MCCB, Current Range: 320A to 630A, Breaking Capacity: 36kA to 50kA, High Performance Compact Size, Suitability for Isolation, Rated at 50o C, Line Load Interchangeability, Double Insulation, Thermal Magnetic Trip Unit (TMTU), Overload Setting: 0.8-1.0 In, Short Circuit Setting: 6-10 In.