The NB1-63 Miniature Circuit Breaker (MCB) is a versatile and essential component for electrical safety, providing reliable protection against short-circuit and overload currents. Designed for efficient circuit isolation and switching, it is widely used across residential, commercial, and industrial electrical distribution systems. Available with various pole configurations and tripping characteristics, this MCB offers high breaking capacity and is easily installed on DIN rails, ensuring robust and compliant electrical protection..