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Home  /  Terminals & Bars  / 

CHINT NBP-63R Moulded Case Circuit Breaker (MCCB)

CHINT NBP-63R Moulded Case Circuit Breaker (MCCB)

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Category: Terminals & Bars
Brand: CHINT
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Description
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CHINT NBP-63R Moulded Case Circuit Breaker (MCCB),
is designe for overload and short-circuit protection in AC 50/60Hz power systems with rated voltages up to 400V and currents up to 63A.
It can also use as an isolating switch for equipment maintenance.
With a breaking capacity of 15kA, compact size, and quick DIN-rail installation,
it’s ideal for JP cabinets, distribution panels, and low-voltage switchgear requiring high safety and performance reliability.

  • Function: Overload, short-circuit protection, and circuit isolation
  • Standards Compliance: IEC60947-2
  • Rated Frequency: 50/60Hz
  • Rated Operating Voltage (Ue):
    • 230V~ (1P)
    • 400V~ (2P, 3P, 4P)
  • Rated Current (In): 1A, 2A, 3A, 4A, 6A, 10A, 16A, 20A, 25A, 32A, 40A, 50A, 63A
  • Number of Poles: 1P, 2P, 3P, 4P
  • Instantaneous Tripping Current: Ii = 8 × In
  • Rated Ultimate Short-circuit Breaking Capacity (Icu): 15kA
  • Rated Service Short-circuit Breaking Capacity (Ics): 7.5kA
  • Impulse Withstand Voltage (Uimp): 6kV
  • Mechanical Life: 20,000 operations
  • Electrical Life: 10,000 operations
  • Pollution Degree: 3
  • Protection Degree: IP20B
  • Tightening Torque: 2.5–3.5 N·m
  • Temperature Reference: 40°C (with derating curve provided)
  • Altitude Derating:
    • 2000m: 1×In
    • 3000m: 0.95×In
    • 4000m: 0.93×In
    • 5000m: 0.9×In
  • Conductor Size:
    • 1–8A: 1mm²
    • 10A: 1.5mm²
    • 13–20A: 2.5mm²
    • 25A: 4mm²
    • 32A: 6mm²
    • 40–50A: 10mm²
    • 63A: 16mm²
  • Mounting: 35mm DIN rail (TH35-7.5 standard)
  • Dimensions (mm):
    • Height: 89
    • Depth: 76–79
    • Width: 18 (1P) / 36 (2P) / 54 (3P) / 72 (4P)
  • Features:
    • High breaking capacity (15kA)
    • Red/green indication for ON/OFF status
    • Ventilation slots for reduced temperature rise
    • Multiple connection types (cable, U-type, pin-type busbar)
    • Quick DIN-rail mounting design

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