Chint NB1-63D3P25 Triple Pole Type D MCB 25A 6kA

The NB1-63D3P25 is a reliable and compact miniature circuit breaker (MCB) designed to provide protection for electrical circuits against overload and short-circuit conditions. As part of the NB1-63 series, it is widely used in residential, commercial, and light industrial three-phase distribution systems where stable and safe circuit control is required.

This model features a 25A rated current with a 6kA breaking capacity, ensuring quick interruption of fault currents to protect wiring, equipment, and connected electrical loads. Its Type D tripping curve is designed for circuits with very high inrush currents, making it suitable for heavy inductive loads such as motors, transformers, compressors, and similar industrial equipment.

With a 3-pole (3P) configuration, the NB1-63D3P25 provides simultaneous disconnection of all three phases, ensuring balanced protection and enhanced safety in three-phase electrical systems. It is designed for DIN rail mounting, allowing for easy and secure installation in distribution boards and control panels.

Key Features:

• Model: NB1-63D3P25
• Type: Miniature Circuit Breaker (MCB)
• Poles: 3P (Three Pole)
• Rated Current: 25A
• Breaking Capacity: 6kA
• Tripping Curve: Type D (10–20 In)
• Mounting: DIN rail installation
• Function: Overload and short-circuit protection