Chint NB1-63C3P40 Triple Pole Type C MCB 40A 6kA

The NB1-63C3P40 is a high-performance miniature circuit breaker (MCB) designed to provide dependable protection against overload and short-circuit faults in three-phase electrical systems. As part of the NB1-63 series, it is widely used in commercial, industrial, and residential power distribution applications where reliable circuit protection is essential.

Featuring a 40A rated current and a 6kA breaking capacity, the NB1-63C3P40 delivers rapid fault interruption to help protect electrical wiring, equipment, and connected loads from damage. Its Type C tripping curve is designed to accommodate moderate inrush currents, making it ideal for motor circuits, transformers, HVAC systems, and other inductive electrical loads.

The 3-pole (3P) configuration ensures simultaneous disconnection of all three phases, providing balanced protection and enhanced operational safety in three-phase installations. Designed for DIN rail mounting, it allows for quick and secure installation in distribution boards, switchboards, and control panels.

Key Features:

• Model: NB1-63C3P40
• Type: Miniature Circuit Breaker (MCB)
• Poles: 3P (Three Pole)
• Rated Current: 40A
• Breaking Capacity: 6kA
• Tripping Curve: Type C (5–10 In)
• Mounting: DIN rail installation
• Function: Overload and short-circuit protection