✅ CHINT 198409 – NB1L-63 RCBO – 3P+N, 50A, C Curve, 300mA Sensitivity, 6kA Breaking Capacity Description (English): The CHINT NB1L-63 RCBO in a 3P+N configuration is built for high-capacity, three-phase systems requiring protection against overload, short circuits, and residual current faults. With a 50A rated current, C-type tripping curve, and 300mA sensitivity, it ensures reliable fire protection and operational continuity in industrial and commercial installations. It supports AC-type leakage detection and features a breaking capacity of 6kA, conforming to IEC 61009-1 standards. The unit operates at 50/60Hz and includes a thermal-magnetic tripping system with high-speed earth leakage response, making it suitable for heavy-load distribution panels. Specifications (English): Model: NB1L-63 Part Number: CHINT 198409 Poles: 3P+N Rated Current [In]: 50A Curve Type: C Sensitivity Current: 300mA Breaking Capacity: 6kA Frequency: 50/60Hz Standards: IEC 61009-1 Protection Type: Overload, short circuit, residual current (AC) Tripping Mechanism: Thermal-magnetic with leakage detection