chint mcb nb1-63ch2p63 63a, 2p 10ka dp c curve

Why Choose the Chint NB1-63CH2P63 Miniature Circuit Breaker?

The Chint NB1-63CH2P63 is a compact and dependable miniature circuit breaker (MCB) designed to protect low voltage electrical circuits against overloads and short circuits. As part of the Chint NB1-63H series, it delivers reliable circuit protection for residential, commercial and industrial electrical installations requiring a higher 10 kA breaking capacity.

This 2 pole C curve MCB features a 63 A rated current, making it ideal for higher current radial circuits, sub-main circuits, distribution boards and mixed inductive loads. The C curve tripping characteristic provides dependable protection where moderate inrush currents are expected, such as small motors, transformers and commercial electrical equipment.

With a rated short-circuit breaking capacity of 10 kA and standard 35 mm DIN rail mounting, the NB1-63CH2P63 is quick to install within consumer units, distribution boards and electrical control panels. Its 2 pole construction provides simultaneous isolation of both conductors for enhanced safety during maintenance.

Key Advantages

• Compact 2 pole miniature circuit breaker.
• 63 A rated current for higher current circuits.
• C curve trip characteristic for moderate inrush current loads.
• 10 kA short-circuit breaking capacity.
• Reliable overload and short-circuit protection.
• DIN rail installation in distribution boards and control panels.

Key Features

• Chint NB1-63H series MCB.
• 63 A rated current.
• C curve tripping characteristic.
• 2 pole configuration.
• 10 kA breaking capacity.
• 230 / 400 V AC rated voltage.
• 35 mm DIN rail mounting.
• Suitable for overload, short-circuit protection and circuit isolation.

Technical Specifications

• Manufacturer: Chint
• Series: NB1-63H
• Model: NB1-63CH2P63
• Product type: Miniature circuit breaker / MCB
• Rated current: 63 A
• Number of poles: 2 pole
• Tripping characteristic: C curve
• Rated voltage: 230 / 400 V AC
• Rated frequency: 50 / 60 Hz
• Rated short-circuit breaking capacity: 10 kA
• Rated insulation voltage: 500 V
• Rated impulse withstand voltage: 4 kV
• Protection rating: IP20
• Mounting type: 35 mm DIN rail
• Standards: IEC / EN 60898-1

Reliable Protection for Mixed Load Circuits

Miniature circuit breakers such as the Chint NB1-63CH2P63 automatically disconnect electrical circuits during overloads or short circuits, helping to protect wiring, equipment and electrical installations from damage.

The C curve characteristic makes this MCB suitable for circuits with moderate inrush currents, including higher current radial circuits, distribution boards, sub-main circuits, control panels, small motors and transformers where a B curve device may nuisance trip.

Typical Applications

• Residential consumer units.
• Commercial distribution boards.
• Industrial control panels.
• Higher current radial circuits.
• Sub-main circuits.
• Electrical installations requiring 63 A protection.

Trusted by Electrical Professionals Worldwide

Chint miniature circuit breakers are trusted by electricians, panel builders and maintenance engineers for dependable circuit protection across residential, commercial and industrial electrical installations.