In low-voltage terminal distribution systems, short-circuit breaking capacity is one of the core indicators for evaluating the safety performance of a circuit breaker. The OFP series models with a rated short-circuit breaking capacity of 4.5 kA are specifically designed for terminal circuits in residential, commercial and similar premises. When a short-circuit fault occurs, these breakers can reliably interrupt fault currents up to 4,500 A, providing robust protection for downstream wiring and equipment. The product is strictly designed and manufactured in accordance with the IEC/EN 60898-1 standard, and every unit is individually tested before leaving the factory. With stable performance and dependable operation, it is an ideal choice for building a safe power distribution system.