5SD7424-1 SIEMENS

The 5SD7424-1 SIEMENS surge arrester is a Type 2 device, also known as a Class C surge protective device (SPD), designed to safeguard electrical installations from transient overvoltages. This surge arrester is specifically engineered for use in TN-S and TT earthing systems, commonly found in residential, commercial, and industrial applications. It features a 4-pole configuration in a 3+1 circuit arrangement, providing comprehensive protection for all live conductors (L1, L2, L3, and Neutral). The arrester has a maximum continuous operating voltage (UC) of 350V, ensuring compatibility with standard European power grids. Its pluggable protective modules allow for easy replacement in the event of a surge event, minimizing downtime and maintenance costs. The integrated fault reporting network (FRN) display provides visual indication of the arrester's status, alerting users to any degradation or failure. The narrow design of the 5SD7424-1 enables space-saving installation in distribution boards and electrical panels. This surge arrester effectively diverts surge currents to earth, preventing damage to sensitive electronic equipment and reducing the risk of fire. By mitigating the impact of lightning strikes and switching transients, the 5SD7424-1 enhances the reliability and safety of electrical systems.