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Home  /  Terminals & Bars  / 

CHINT NB1-63H/2 Miniature Circuit Breaker (MCB)

CHINT NB1-63H/2 Miniature Circuit Breaker (MCB)

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Category: Terminals & Bars
Brand: CHINT
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Description
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CHINT NB1-63H/2 Miniature Circuit Breaker (MCB),
provides dependable protection for circuits against overloads and short-circuits in residential,
commercial, and industrial installations. Designe for AC 230/400 V systems up to 63 A,
it ensures safe circuit isolation and switching. With 10 kA breaking capacity,
B/C/D tripping characteristics, and compliance with IEC/EN 60947 standards,
the NB1-63H/2 guarantees reliable performance, easy DIN-rail installation,
and long mechanical life for modern electrical distribution systems.

  • Standard: IEC/EN 60947
  • Rated Voltage (Ue): AC 230/400~240/415 V
  • Insulation Voltage (Ui): 500 V
  • Rated Frequency: 50/60 Hz
  • Rated Current (In): 1–63 A
  • Rated Short-Circuit Breaking Capacity (Icu): 10,000 A
  • Thermo-Magnetic Release Characteristics: B, C, D curves
  • Rated Impulse Withstand Voltage (Uimp): 6,000 V
  • Dielectric Test Voltage (1 min): 2 kV
  • Energy Limiting Class: 3
  • Electrical Life: 10,000 operations
  • Mechanical Life: 20,000 operations
  • Ambient Temperature: −25 °C to +70 °C (daily average ≤ +35 °C)
  • Reference Temperature for Setting: 30 °C
  • Storage Temperature: −25 °C to +70 °C
  • Terminal Type: Cable/U-type busbar/Pin-type busbar
  • Terminal Size: up to 25 mm²
  • Tightening Torque: 2.5 N·m
  • Mounting: DIN rail EN 60715 (35 mm)
  • Connection: From top or bottom
  • Protection Degree: IP20
  • Auxiliary Options: Shunt release, under-voltage release, alarm, and auxiliary contacts
  • DC Variants: Rated for up to DC 220 V in 2P versions

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