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CHINT NB1-63H 3P C63 10kA High Breaking Capacity Miniature Circuit Breaker

CHINT NB1-63H 3P C63 10kA High Breaking Capacity Miniature Circuit Breaker

Manufacturer: CHINT
Model: NB1-63H 3P C63 10kA
Type: Miniature Circuit Breaker (MCB)
Poles: 3P
Rated Current (In): 63A
Trip Characteristic: C (5-10 In)
Breaking Capacity (Icn): 10kA
Rated Voltage (Ue): 400V (for three-phase systems)

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Product Description

The CHINT NB1-63H series high-breaking capacity MCBs provide reliable overcurrent and short-circuit protection for low-voltage distribution systems. This model features a 10kA breaking capacity, quickly clearing fault currents to safeguard equipment and wiring. The C‑curve trip characteristic is ideal for protecting mixed loads with moderate inrush currents, making it suitable for industrial, commercial, and residential applications.

Standard Features

  • High Breaking Capacity: Rated ultimate short-circuit breaking capacity up to 10kA ensures effective protection in high-fault-current scenarios.

  • C‑Curve Trip: Instantaneous trip range of 5‑10 times rated current, optimised for circuits with small motors, air conditioners, and other inductive loads.

  • Modular DIN Rail Mount: Standard 3P width of 54mm, quick snap‑on mounting to 35mm DIN rail (EN 60715) for easy panel layout and expansion.

  • Dual Wiring Terminals: Output side accommodates both busbars and flexible/rigid conductors; input side supports flexible/rigid wires for flexible installation.

  • International Approvals: Complies with IEC/EN 60898‑1 and IEC/EN 60947‑2, with CCC, CE, SEMKO and other certifications for assured quality and safety.

  • Visual Status Indication: Clear red/green contact position indicator shows on/off status at a glance, simplifying maintenance and troubleshooting.

Technical Specifications

ParameterValue
TypeMiniature Circuit Breaker (MCB)
Order NumberNB1-63H 3P C63 10kA
Poles3P
Rated Current (In)63A
Rated Voltage (Ue)400V AC (50/60Hz)
Rated Insulation Voltage (Ui)500V
Rated Impulse Withstand Voltage (Uimp)4kV
Tripping CharacteristicC (5-10 In)
Rated Breaking Capacity (Icn)10kA
MountingDIN rail EN 60715 (35mm)
Protection DegreeIP20
Standards & CertificationsIEC/EN 60898‑1, IEC/EN 60947‑2, CCC, CE

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