The basic M MCB series protects installations against overloads and short-circuits,guaranteeing reliability and safety of operations. ABB basic M series satisfies most common requirements in terms of MCBs,allowing the usage of different pole configurations,characteristics and rated currents for residential and commercial applications. This product is manufactured according to international IEC standards.

• Our MCBs are advanced for more than 120 years in the history and mindset of Hugo Stotz.Today we offer feasible MCB solutions for all kind of applications,which are developed in close touch to market requirements from various branches. Numerous patents have been made during this time and ensure our market position as the “original” and innovation leader. Terminal
• The extended terminal size with insulating part for IP20 protection and the new pressure plate for improved conductor connection facilitate the handling and increase safety. Switching mechanism
• A new functional design and the assembly of the switching mechanism was developed to increase the reliability of triggering even under tough conditions
• Design of contacts
• Contact design with snap action mechanism for improved arc movement and for an optimized switching behavior
• Tripping device
• Optimized arrangement of the thermal and electromagnetic tripping device in consideration of the arc extinguishing system to improve safety