chint mcb nb1-63b4p10 10a, 4p 6ka 4p b curve

Why Choose the Chint NB1-63B4P10 Miniature Circuit Breaker?

The Chint NB1-63B4P10 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 NB1-63 series, it provides reliable circuit protection for residential, commercial and light industrial electrical installations. This model is a 4 pole, B curve, 10 A, 6 kA MCB.

This 4 pole B curve MCB features a 10 A rated current, making it suitable for three-phase and neutral circuits supplying lighting, control systems, instrumentation, distribution circuits and other resistive loads. The B curve tripping characteristic provides fast protection for circuits with low inrush currents.

With a rated short-circuit breaking capacity of 6 kA and a standard 35 mm DIN rail mounting format, the NB1-63B4P10 is easy to install within distribution boards and electrical control panels. Its 4 pole design provides simultaneous isolation and protection across all three phases and neutral.

Key Advantages

• Compact 4 pole miniature circuit breaker.
• 10 A rated current for three-phase and neutral circuits.
• B curve trip characteristic for resistive loads.
• 6 kA short-circuit breaking capacity.
• Reliable overload and short-circuit protection.
• DIN rail installation in distribution boards and control panels.

Key Features

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

Technical Specifications

• Manufacturer: Chint
• Series: NB1-63
• Model: NB1-63B4P10
• Product type: Miniature circuit breaker / MCB
• Rated current: 10 A
• Number of poles: 4 pole
• Tripping characteristic: B curve
• Rated voltage: 400 V AC
• Rated frequency: 50 / 60 Hz
• Rated short-circuit breaking capacity: 6 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 Three-Phase and Neutral Circuits

Miniature circuit breakers such as the Chint NB1-63B4P10 automatically disconnect electrical circuits when overloads or short circuits occur. This helps protect wiring, connected equipment and electrical installations from excessive current and fault conditions.

The B curve characteristic trips between three and five times the rated current, making it suitable for lighting circuits, control systems, signalling equipment and other resistive loads with low inrush currents.

Typical Applications

• Three-phase and neutral distribution boards.
• Industrial control panels.
• Lighting circuits.
• Control and signalling circuits.
• Instrumentation systems.
• Electrical installations requiring 10 A four pole 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.