chint mcb nbh8-40-c02 2a nbh8-40 mcbs c curve

Why Choose the Chint NBH8-40-C02 Miniature Circuit Breaker?

The Chint NBH8-40-C02 is a compact and reliable 2 A miniature circuit breaker (MCB) designed to protect low voltage electrical circuits against overload and short-circuit faults. As part of the Chint NBH8-40 series, it provides dependable circuit protection and safe isolation for residential, commercial and light industrial distribution applications.

This MCB features a C curve tripping characteristic, making it suitable for circuits with moderate inrush current, including small inductive loads, control circuits, auxiliary supplies and general distribution applications. Its compact 1P+N configuration provides live pole protection with neutral switching in a single DIN rail mounted device.

With a rated current of 2 A and a 230/240 V AC operating voltage, the NBH8-40-C02 is ideal for protecting low current control, signalling and auxiliary circuits. Its modular construction allows straightforward installation in consumer units, distribution boards and electrical control panels.

Key Advantages

• Compact 2 A miniature circuit breaker for low current circuit protection.
• C curve tripping characteristic suitable for moderate inrush current applications.
• 1P+N configuration for live protection and neutral switching.
• Protects against overload and short-circuit faults.
• Suitable for 230/240 V AC low voltage distribution systems.
• DIN rail mounting for fast installation in distribution boards and control panels.

Key Features

• Chint NBH8-40 miniature circuit breaker series.
• 2 A rated current.
• C curve trip characteristic.
• 1P+N pole configuration.
• 230/240 V AC rated operational voltage.
• Provides overload and short-circuit protection.
• Suitable for isolation and circuit switching.
• Compact modular DIN rail design.

Technical Specifications

• Manufacturer: Chint
• Series: NBH8-40
• Model: NBH8-40-C02
• Product type: Miniature circuit breaker
• Rated current: 2 A
• Trip curve: C curve
• Number of poles: 1P+N
• Rated operational 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 depending on version
• Standard: IEC/EN 60898-1
• Energy limiting class: Class 3
• Protection degree: IP20
• Mechanical life: 20,000 operations
• Electrical life: 10,000 operations
• Mounting type: 35 mm DIN rail
• Terminal connection: Cable or pin-type busbar
• Operating temperature: -5°C to +40°C
• Dimensions (W × H × D): approx. 44 × 86 × 60.7 mm

Reliable Protection for Control and Auxiliary Circuits

Miniature circuit breakers such as the Chint NBH8-40-C02 automatically disconnect an electrical circuit when excessive current is detected. This helps protect wiring, connected equipment and electrical installations from damage caused by overloads or short circuits.

The C curve trip profile is designed to tolerate moderate inrush currents while still providing effective circuit protection. This makes the NBH8-40-C02 suitable for low current control circuits, auxiliary supplies, signalling circuits and small inductive loads where dependable protection is required.

Typical Applications

• Control panel auxiliary circuits.
• Signalling and indication circuits.
• Small inductive load protection.
• Residential and commercial distribution boards.
• Low current final circuit protection.
• Electrical isolation and switching applications.

Trusted by Electrical Professionals Worldwide

Chint NBH8 miniature circuit breakers are widely used by electrical installers, panel builders and maintenance engineers to deliver compact, dependable circuit protection for low voltage distribution and control applications.