CHINT NB3LEU Residual Current Operated Circuit Breaker,
with Over-current Protection(Electronic) is a high-performance protective device that combines residual current,
and over-current protection in one compact unit.
Designe for AC 50/60 Hz, 240 V circuits, it provides reliable protection against overloads,
short-circuits, and electric leakage, ensuring safety for personnel and equipment.
Featuring electronic tripping, Type AC/A leakage sensitivity, and B/C tripping curves,
it is ideal for residential, commercial, and light industrial installations requiring enhance electrical safety and stability.
- Standards Compliance: IEC/EN 61009-1
- Rated Current (In): 6 A, 10 A, 13 A, 16 A, 20 A, 25 A, 32 A, 40 A, 45 A, 50 A
- Poles: 1P+N
- Rated Voltage (Ue): 240 V AC
- Rated Frequency: 50/60 Hz
- Tripping Type: Electronic
- Tripping Curves:
- B Curve (3–5 In): Suitable for long cable runs and TN/IT systems
- C Curve (5–10 In): Ideal for resistive and inductive loads with low inrush current
- Leakage Detection Type: Type A and Type AC (sensitive to AC and pulsating DC leakage)
- Rated Residual Operating Current (IΔn): 30 mA
- Rated Residual Making and Breaking Capacity (IΔm): 2,000 A
- Rated Short-circuit Capacity (Icn): 10,000 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 min
- Break Time Under IΔn: ≤ 0.1 s
- Pollution Degree: 2
- Electrical Life: 2,000 operations
- Mechanical Life: 10,000 operations
- Contact Position Indicator: Yes
- Protection Degree: IP20
- Ambient Operating Temperature: –5 °C to +40 °C (average ≤ 35 °C)
- Storage Temperature: –25 °C to +70 °C
- Temperature Derating (Reference Temp: 30 °C):
- 0.95 at 40 °C
- 0.90 at 50 °C
- 0.85 at 60 °C
- 0.83 at 70 °C
- Mounting Method: On DIN rail EN 60715 (35 mm) with quick clip device
- Connection: From bottom
- Terminal Connection Type: Cable, U-type busbar, or Pin-type busbar
