The 103355 surge arrester from Noark is a class 2 device engineered to safeguard electrical systems from overvoltages typically associated with transient fast switching operations or indirect lightning strikes. With a voltage rating of 275 V AC and a maximum discharge current capacity of 20 kA, this surge arrester is well-suited for installation in both main boards and sub-distribution boards. For optimal protection, it is recommended to install these devices at intervals of every 10 to 20 meters of cable length.

This particular model features a 3+N-pole configuration and is designed for seamless coordination with the class 1 devices of the EX9UE1 35 line, specifically using a 10-meter cable for the EX9UE2 20 275 variant. The surge arrester's construction utilizes varistor elements, which are known for their low response time to voltage spikes, ensuring prompt diversion of excess voltage away from sensitive equipment.

Additionally, the EX9UE2 20 440 series boasts a modular design that includes a replaceable fuse element. This allows for easy and efficient replacement of functional modules without the need for complete device replacement, thereby minimizing downtime and maintenance costs in the event of component burnout due to frequent overvoltage occurrences. The product's EAN is 8592765033567.