chint mcb nbh8-40-b02 2a nbh8-40 mcbs b curve

Why Choose the Chint NBH8-40-B02 Miniature Circuit Breaker?

The Chint NBH8-40-B02 is a compact and dependable 1P+N miniature circuit breaker designed to provide reliable overload and short-circuit protection in low-voltage electrical installations. As part of the proven Chint NBH8 series, it is suitable for residential, commercial and light industrial applications where safe circuit protection and isolation are essential.

Its slim modular design allows efficient installation within consumer units, distribution boards and electrical control panels. The integrated contact position indicator provides a clear visual indication of breaker status, while the DIN rail mounting format enables quick and straightforward installation.

With a rated current of 2 A, a B curve tripping characteristic and a 1P+N configuration, the NBH8-40-B02 is ideal for protecting low-current lighting, control and auxiliary circuits where fast fault protection and reliable operation are required.

Key Advantages

• Compact 2 A miniature circuit breaker for low-current circuit protection.
• 1P+N configuration for protected live and switched neutral arrangements.
• B curve tripping characteristic for resistive loads and low inrush current circuits.
• Provides dependable overload and short-circuit protection.
• Suitable for switching and circuit isolation.
• Quick installation using standard 35 mm DIN rail mounting.

Key Features

• Chint NBH8 miniature circuit breaker series.
• 2 A rated current.
• B curve tripping characteristic.
• 1P+N pole configuration.
• Designed for overload and short-circuit protection.
• Contact position indicator for clear operating status.
• Compact modular housing.
• 35 mm DIN rail mounting with fast clip device.

Technical Specifications

• Manufacturer: Chint
• Series: NBH8
• Model: NBH8-40-B02
• Product type: Miniature circuit breaker
• Rated current: 2 A
• Number of poles: 1P+N
• Tripping curve: B curve
• Rated voltage: 230 / 240 V AC
• Rated frequency: 50 / 60 Hz
• Rated insulation voltage: 500 V
• Rated impulse withstand voltage: 4 kV
• Breaking capacity: 4.5 kA or 6 kA
• Energy limiting class: Class 3
• Protection rating: IP20
• Standard: IEC / EN 60898-1
• Mounting type: 35 mm DIN rail
• Terminal connection: Cable or pin-type busbar

Reliable Protection for Low-Current Electrical Circuits

The Chint NBH8-40-B02 automatically disconnects electrical circuits when overload or short-circuit conditions occur, helping to protect wiring, equipment and connected devices from electrical damage. Its B curve characteristic is designed to trip between 3 and 5 times the rated current, making it suitable for resistive loads and circuits with minimal inrush current.

The 1P+N configuration protects the live conductor while switching the neutral conductor, providing reliable isolation for single-phase electrical installations.

Typical Applications

• Consumer units and distribution boards.
• Residential electrical installations.
• Commercial lighting circuits.
• Control and auxiliary circuits.
• Electrical control panels.
• Low-current single-phase distribution systems.

Trusted by Electrical Professionals Worldwide

Chint NBH8 miniature circuit breakers are trusted by electricians, panel builders and maintenance engineers for reliable circuit protection, compact installation and dependable long-term performance.