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Home  /  Terminals  /  Terminals & Bars  / 

CHINT NB4LE Residual Current Operated Circuit Breaker (Electronic)

CHINT NB4LE Residual Current Operated Circuit Breaker (Electronic)

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Category: Terminals & Bars
Brand: CHINT
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Description
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CHINT NB4LE Residual Current Operated Circuit Breaker (Electronic),

delivers advance residual current, overload, and short-circuit protection in one compact design.
Engineere to meet IEC/EN 61009-1 standards, it ensures high reliability and user safety in residential and commercial circuits.
With rated currents up to 40A, sensitivity levels of 30mA and 100mA, and Type A or F detection,
the NB4LE series offers fast fault response and enhanced immunity to nuisance tripping, ensuring continuous power and dependable performance.

  • Standard Compliance: IEC/EN 61009-1
  • Rated Current (In): 6A, 10A, 13A, 16A, 20A, 25A, 32A, 40A
  • Rated Voltage (Ue): 230/240V AC
  • Rated Residual Operating Current (IΔn): 30mA or 100mA
  • Type of RCD:
    • TypeA–Detects AC and pulsating DC residual currents
    • TypeF–Detects mixed frequencies, resistant to DC up to 10mA, reduced nuisance tripping
  • Tripping Curves:
    • B Curve: Resistive or long cable protection (3–5In)
    • C Curve: Inductive/resistive loads (5–10In)
    • BK/CK Curves: Enhanced protection with precise thermal-magnetic operation
  • Rated Short-circuit Breaking Capacity (Icn): 10kA
  • Rated Residual Making and Breaking Capacity (IΔm): 3kA
  • Rated Frequency: 50/60Hz
  • Dielectric Test Voltage: 2kV for 1 minute
  • Rated Impulse Withstand Voltage (Uimp): 4kV
  • Rated Insulation Voltage (Ui): 500V
  • Poles: 2P
  • Operating Temperature: −25°C to +70°C
  • Storage Temperature: −25°C to +70°C
  • Pollution Degree: 2
  • Mechanical Life: 10,000 operations
  • Electrical Life: 4,000 operations
  • Protection Degree: IP20
  • Mounting: DIN Rail EN 60715 (35mm)
  • Connection: Bottom electrical feeding
  • Terminal Capacity: 18–3 AWG (up to 25mm² cable)
  • Tightening Torque: 2 N·m (18 in-lbs)
  • Temperature Derating Reference: 30°C (coefficient: 1.0)
  • Dimensions (mm):
    • Height: 86
    • Width: 36
    • Depth: 78.1
  • Certifications: CE, CB

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