chint mcb nb1-63dh1p63 63a, 1p 10ka sp d curve

Why Choose the Chint NB1-63DH1P63 Miniature Circuit Breaker?

The Chint NB1-63DH1P63 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 provides reliable circuit protection for residential, commercial and industrial installations where a higher breaking capacity is required.

This 1 pole D curve MCB features a 63 A rated current, making it suitable for motors, transformers, solenoids, magnetic devices, discharge lighting and other equipment with high inrush currents. The D curve tripping characteristic is specifically designed for highly inductive loads that experience substantial start-up currents.

With a rated short-circuit breaking capacity of 10 kA and a standard 35 mm DIN rail mounting format, the NB1-63DH1P63 is easy to install within consumer units, distribution boards and electrical control panels. Its compact modular construction supports neat installation and dependable long-term performance.

Key Advantages

• Compact 1 pole miniature circuit breaker.
• 63 A rated current for high inrush current circuits.
• D curve trip characteristic for inductive and motor loads.
• 10 kA short-circuit breaking capacity.
• Reliable overload and short-circuit protection.
• Quick DIN rail installation in distribution boards and control panels.

Key Features

• Chint NB1-63H series MCB.
• 63 A rated current.
• D curve tripping characteristic.
• 1 pole configuration.
• 10 kA breaking capacity.
• 230 V AC rated voltage.
• DIN rail mounting.
• Suitable for overload and short-circuit protection.

Technical Specifications

• Manufacturer: Chint
• Series: NB1-63H
• Model: NB1-63DH1P63
• Product type: Miniature circuit breaker / MCB
• Rated current: 63 A
• Number of poles: 1 pole
• Tripping characteristic: D curve
• Rated voltage: 230 V AC
• Rated frequency: 50 / 60 Hz
• Rated short-circuit breaking capacity: 10 kA
• Rated insulation voltage: 500 V
• Rated impulse withstand voltage: 6 kV
• Protection rating: IP20
• Mounting type: 35 mm DIN rail
• Standards: IEC / EN 60898-1

Reliable Protection for High Inrush Current Circuits

Miniature circuit breakers such as the Chint NB1-63DH1P63 automatically disconnect electrical circuits when overloads or short circuits occur. This helps protect cables, connected equipment and electrical installations from damage caused by excessive current.

The D curve characteristic makes this MCB suitable for circuits with high inrush currents, including motors, transformers, magnetic devices, solenoids, discharge lighting and other inductive loads. Its higher breaking capacity makes it suitable for installations where enhanced fault current performance is required.

Typical Applications

• Industrial control panels.
• Motor circuits.
• Transformer protection.
• Magnetic device circuits.
• Discharge lighting 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.