This Polycab MCB is an essential part of any electrical system as it provides protection against overload and short circuit currents. As a part of the electricals category, it is designed to ensure the safety of the electrical system by tripping in the event of an overload or short circuit. Its compact form factor optimizes space utilization, facilitating installation in confined areas like electrical panels and distribution boards. A circuit breaker is an automatically-operated electrical switch designed to protect an electrical circuit from damage caused by overload of electricity or short circuit. Its function is to detect a fault condition and by interrupting continuity, to immediately discontinue electrical flow. The overload protection is achieved by the heat generated inside the magnetic coil, which activates the bimetallic disc and separates the contact through trip mechanism. So, in case the overload hits the danger-level, the mcb promptly opens the contacts and cuts off the power supply, hence, protecting your dream household appliances. Orient electric brings to you the revolutionary sdb technology (snap disc bi-metal) for mcbs which is superior to conventional mcbs for the following reasons: A conventional mcb is prone to manual adjustment of thermal bi-metal strip to manipulate tripping characteristics under overloading conditions.