CHINT NB3LE Residual Current Operated Circuit Breaker

CHINT NB3LE Residual Current Operated Circuit Breaker,

with Over-current Protection (Electronic) is a compact,
and reliable protection device that combines residual current (earth leakage) and over-current protection in one unit.
Designe for use in AC 50/60 Hz circuits up to 240 V, it ensures safety against overloads,
short-circuits, and electric shock hazards. With B and C tripping curves,
Type A and AC sensitivity, and a 6 kA short-circuit capacity,
the NB3LE is ideal for residential and commercial applications requiring accurate,
electronic protection and easy DIN-rail installation.

• Standards Compliance: IEC/EN 61009-1
• Function: Provides combined protection against overload, short-circuit, and earth leakage faults
• Rated Current (In): 6 A, 10 A, 16 A, 20 A, 25 A, 32 A
• Poles: 1P+N
• Rated Voltage (Ue): 240 V AC
• Rated Frequency: 50/60 Hz
• Tripping Type: Electronic (integrated residual current and thermal-magnetic release)
• Tripping Curves:
  • B Curve (3–5 In): For resistive loads and long cable runs (TN/IT systems)
  • C Curve (5–10 In): For mixed resistive and inductive loads with low inrush currents
• Leakage Detection Type: Type A and Type AC
• Rated Residual Operating Current (IΔn): 30 mA (for additional personal protection)
• Rated Residual Making and Breaking Capacity (IΔm): 2,000 A
• Rated Short-circuit Capacity (Icn): 6,000 A
• Break Time Under IΔn: ≤ 0.1 s
• Rated Impulse Withstand Voltage (Uimp): 4,000 V (1.2/50 μs)
• Dielectric Test Voltage: 2 kV for 1 minute
• Rated Insulation Voltage (Ui): 500 V
• Pollution Degree: 2
• Electrical Life: 2,000 operations
• Mechanical Life: 20,000 operations
• Ambient Operating Temperature: –5 °C to +40 °C (average ≤ 35 °C)
• Storage Temperature: –25 °C to +70 °C
• Temperature Derating Coefficient:
  • 0.95 at 40 °C
  • 0.90 at 50 °C
  • 0.85 at 60 °C
  • 0.83 at 70 °C
• Mounting Method: DIN rail EN 60715 (35 mm) with fast clip-on design