Power issues don’t give warnings—your protection should be ready before they happen. The CHINT NB1-63H 2P 10kA C-Curve MCB is built to keep your electrical system safe, stable, and running without interruption.

Provides dependable protection against overload and short-circuit faults in AC circuits up to 415 V. Engineered for residential, commercial, and industrial applications, it features a 10 kA breaking capacity and a thermomagnetic trip. With a compact modular design, IP20 protection, and compliance with IEC/EN 60898-1 standards, the NB1-63H ensures safe, efficient, and durable circuit control in modern power distribution systems.

What makes this MCB stand out is its C-curve tripping characteristic, making it ideal for everyday circuits like lighting, power outlets, and appliances with moderate start-up loads. It reacts quickly when needed but avoids unnecessary tripping—keeping your systems efficient and frustration-free.

Compact DIN-rail design ensures easy installation and long-term reliability, whether you're upgrading a switchboard or working on a new project.

Technical Specification: 

Standard: IEC/EN 60898-1
Rated Voltage (Ue): AC 415V~ 
Rated Insulation Voltage (Ui): 500 V
Rated Current (In): 40 A, 2P
Rated Short-Circuit Breaking Capacity (Icu): 10,000 A
Tripping Characteristics: C Curve (5–10 In)
Rated Frequency: 50/60 Hz
Rated Impulse Withstand Voltage (Uimp): 6 kV
Terminal Type: Cable / U-type busbar / Pin-type busbar
Terminal Capacity: Up to 25 mm²
Tightening Torque: 2.5 N·m
Mounting: DIN-rail EN 60715 (35 mm)
Connection: Top or bottom feed
Accessories: Click here Auxiliary contact, shunt release, under-voltage release, alarm contact
Applicable for: Industrial distribution panels, residential consumer units, and control systems 

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