The 103340 surge arrester by Noark is engineered to safeguard electrical systems against direct, low-intensity lightning strikes. It is a combined Class 1+2 device, aligning with the requirements for Lightning Protection Zones LPL III and IV as outlined in EN 62305. This arrester is compatible with a 3-phase TN-C network and is capable of handling a total surge current of 37.5 kA, with potential surges reaching 75 or 100 kA depending on various factors such as the configuration, location of point grounding, and the grounding of the lightning protection system.

Featuring a modular design, the EX9UE1+2 12.5 surge arrester incorporates varistor elements that ensure a rapid response time, fulfilling the standards for both Class I and II protection. The unit is rated for 275 V AC and can withstand surge currents up to 12.5 kA. One of its key attributes is the replaceable fuse element, which allows for the swift and effortless exchange of functional modules in case of damage from frequent overvoltage peaks. The product is designed with a 3+N-pole configuration and carries the identifier 8592765033413.