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Home  /  Terminals & Bars  / 

CHINT NXB-125 Moulded Case Circuit Breaker

CHINT NXB-125 Moulded Case Circuit Breaker

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Category: Terminals & Bars
Brand: CHINT
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Description
Shipping & delivery

CHINT NXB-125 Moulded Case Circuit Breaker,
it offers advance overload, short-circuit, and isolation protection for both AC and DC applications.
Built to IEC/EN 60947-2 standards, it provides reliable performance across 230/400V AC and up to 220V DC systems.
With rated currents from 63A to 125A, breaking capacity up to 20kA, and C or D tripping curves,
the NXB-125 ensures efficient circuit protection and long service life for residential, commercial, and industrial environments.

  • Function: Automatically disconnects during abnormal voltage (over/under) and restores after recovery
  • Rated Voltage (Ue): AC 230V, 50Hz
  • Rated Operating Current (Ie): 32A, 40A, 50A, 63A, 80A
  • Number of Poles: 1P+N, 3P+N
  • Overvoltage Cutoff Value: 275V
  • Undervoltage Cutoff Value: 161V
  • Recovery Voltage Range: 196V–253V
  • Voltage Protection Range: 0–450V
  • Time Delay for Reconnection: 30 ±10 seconds
  • Impulse Withstand Voltage: 4kV (Category III equipment safety standard)
  • Mechanical/Electrical Life: >50,000 operations
  • Power Consumption: <2W
  • Ambient Temperature: −35°C to +70°C
  • Altitude: ≤3000m
  • Relative Humidity: ≤50% at +40°C, up to 90% at +20°C
  • Pollution Degree: 2
  • Mounting Category: II or III
  • Mounting Type: TH35-7.5 DIN rail (vertical deviation ≤5°)
  • Connection Method:
    • Bottom entry and upper/bottom exit wiring
    • Neutral (N) and Live (L) connections must not be reverse
  • Conductor Capacity:
    • 32A → 6mm²
    • 40A → 10mm²
    • 50A → 10mm²
    • 63A → 16mm²
    • 80A → 25mm²
  • LED Indication:
    • Green = Normal voltage
    • Red = Overvoltage/Undervoltage fault
  • Dimensions (mm): 81 × 42.5 × 27 (H×W×D)
  • Installation Tip: Tighten terminal screws before use to prevent contact failure

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