CHINT NB4LE-AFD Residual Current Operated Circuit Breaker (Electronic),
integrates arc fault detection, overload, short-circuit, and residual current protection into one compact device.
Designe for AC 230/240V, 50Hz circuits and rated up to 32A,
it effectively prevents electrical fires cause by arc faults while offering leakage and overload protection.
With Type A residual current operation and B, C, BK, and CK tripping curves,
this device ensures comprehensive protection for modern residential and commercial installations, enhancing system safety and reliability.
- Function: Overload, short-circuit, leakage, and arc fault protection
- Standards Compliance: IEC/EN61009-1, IEC/EN62606
- Rated Voltage (Ue): AC 230/240V
- Rated Current (In): 6A, 10A, 13A, 16A, 20A, 25A, 32A
- Number of Poles: 2P
- Rated Frequency: 50Hz
- Residual Current Type: Type A (sensitive to AC and pulsed DC residual currents)
- Tripping Characteristics: B, C, BK, CK curves for different circuit protection needs
- Rated Sensitivity (IΔn): 30mA
- Rated Residual Making and Breaking Capacity (IΔm): 3000A
- Rated Short-Circuit Capacity (Icn): 6000A
- Break Time Under IΔn: ≤0.1s
- Rated Impulse Withstand Voltage (Uimp): 4kV
- Dielectric Test Voltage (1 min): 2kV
- Insulation Voltage (Ui): 500V
- Pollution Degree: 2
- Mechanical Life: 10,000 operations
- Electrical Life: 4,000 operations
- Indicator Light Status:
- Blue = Normal operation
- Red flashing (10s) = Residual current fault
- Red & Blue alternating (10s) = Arc fault
- Protection Degree: IP20
- Terminal Connection Type: Cable / U-type / Pin-type busbar
- Terminal Capacity (Cable): Up to 25 mm²
- Terminal Capacity (Busbar): Up to 10 mm²
- Tightening Torque: 2 N·m (18 in·lbs)
- Mounting: 35mm DIN rail (EN 60715)
- Connection: Bottom feeding
- Operating Temperature: –25°C to +40°C (daily avg ≤35°C)
- Storage Temperature: –25°C to +70°C
- Temperature Derating: 1.0 at 30°C, 0.8 at 70°C
- Dimensions (mm): 78 (H) × 54 (W) × 86 (D)
- Certifications: CE, CB, RoHS
