CHINT NB3LEG-40 Residual Current Operated Circuit Breaker,
- Function: Combined protection against overload, short-circuit, and residual current leakage
- Standards Compliance: BS EN / IEC 61009-1
- Rated Current (In): 6 A, 10 A, 13 A, 16 A, 20 A, 25 A, 32 A, 40 A
- Poles: 1P+N
- Rated Voltage (Ue): 240 V AC
- Rated Frequency: 50 Hz
- Tripping Type: Electronic
- Tripping Curves:
- B Curve (3–5 In): For long cable circuits and TN/IT systems
- C Curve (5–10 In): For resistive and inductive loads with low inrush currents
- Leakage Detection Types: Type A (AC + pulsating DC) and Type AC (sinusoidal AC only)
- Rated Residual Operating Current (IΔn): 10 mA / 30 mA
- Rated Residual Making and Breaking Capacity (IΔm): 3,000 A
- Rated Short-circuit Capacity (Icn): 6,000 A
- Rated Impulse Withstand Voltage (Uimp): 4 kV (1.2/50 μs waveform)
- Insulation Voltage (Ui): 500 V
- Dielectric Test Voltage: 2 kV for 1 minute
- Break Time Under IΔn: ≤ 0.1 s
- Rated Pollution Degree: 2
- Electrical Life: 4,000 operations
- Mechanical Life: 20,000 operations
- Contact Position Indicator: Yes
- Ambient Operating Temperature: –5 °C to +40 °C (average ≤ 35 °C)
- Storage Temperature: –25 °C to +70 °C
- Temperature Derating: Reference temperature 30 °C; current derating factor:
- 0.95 at 40 °C
- 0.85 at 60 °C
- 0.80 at 70 °C
- Mounting Method: 35 mm DIN rail (EN 60715), quick clip-on
- Connection Direction: From bottom
