CHINT NB1L Residual Current Operated Circuit Breaker,
- Function: Provides combined protection against earth leakage, overload, and short-circuit faults
- Standards Compliance: IEC/EN 61009-1
- Tripping Type: Thermo-magnetic release
- Leakage Detection Type: Type AC, Type A, and Type A-SI (for C40 only)
- Rated Voltage (Ue): 220/230/240 V~
- Rated Current (In): 1 A, 2 A, 3 A, 4 A, 6 A, 10 A, 13 A, 16 A, 20 A, 25 A, 32 A, 40 A
- Rated Residual Operating Current (IΔn): 0.03 A, 0.1 A, 0.3 A (depending on model)
- Rated Residual Making and Breaking Capacity (IΔm): 6,000 A
- Rated Short-circuit Capacity (Icn): 6,000 A (6 kA)
- Rated Frequency: 50/60 Hz
- Rated Impulse Withstand Voltage (Uimp): 4 kV
- Insulation Voltage (Ui): 500 V
- Dielectric Test Voltage: 2 kV for 1 min
- Tripping Curves:
- B Curve (3–5 In): For long cable runs and TN/IT systems
- C Curve (5–10 In): For resistive and inductive loads with low inrush current
- Break Time Under IΔn: ≤ 0.1 s
- Pollution Degree: 2
- Mechanical Life: 20,000 operations
- Electrical Life: 2,000–3,000 operations (depending on curve)
- Ambient Operating Temperature: –25 °C to +40 °C (average ≤ 35 °C)
- Storage Temperature: –25 °C to +70 °C
- Protection Degree: IP20
- Terminal Connection: Cable, U-type busbar, or pin-type busbar (top/bottom)
- Terminal Capacity:
- Cable: up to 25 mm² (AWG 18–3)
- Busbar: up to 10 mm² (AWG 18–8)
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