1. It is strictly designed upon a series of international standards, such as B-curve (General illumination), C-curve (Inductive loads like motors and air conditioners) and D-curve (High impact current equipment like transformers and compressors), and thus provides precise and accurate overload long-time inverse time protection and instantaneous short-circuit protection.        
2. Modularized standard dimensions (Modularization and digitization design) for easy mounting on standard rails. Adopt tunnel-style terminals that accommodate both flexible and rigid wires; it is equipped with anti-slip clamps for a more secure and more rapid wiring.      3. Flexible compatibility with electrical leakage protection accessories (RCD Modules), under-voltage release accessories, auxiliary contact modules, shunt trip accessories, etc.