Chint NB1-63D3P20 Triple Pole Type D MCB 20A 6kA

The NB1-63D3P20 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 ideal for residential, commercial, and light industrial applications where circuits supplying inductive loads require reliable fault protection.

Featuring a 20A rated current and a 6kA breaking capacity, the NB1-63D3P20 quickly disconnects fault currents to help protect electrical wiring, equipment, and connected loads. Its Type D tripping curve is specifically designed for applications with very high inrush currents, making it suitable for motors, transformers, compressors, and other heavy-duty inductive equipment.

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

Key Features:

• Model: NB1-63D3P20
• Type: Miniature Circuit Breaker (MCB)
• Poles: 3P (Three Pole)
• Rated Current: 20A
• Breaking Capacity: 6kA
• Tripping Curve: Type D (10–20 In)
• Mounting: DIN rail installation
• Function: Overload and short-circuit protection