DEHN + SOHNE DEHNguard M YPV SCI surge arrester

The DEHNguard M YPV SCI surge arrestor - made by DEHN + SOHNE, a German-based specialist in lightning and surge protection - is designed to improve the safety and reliability of a PV installation. Based on a decade of experience in applying surge protective devices in PV systems, the arrester includes the latest technology in device and system security.

The DEHN + SOHNE technology of fault-resistant Y protective circuit and a combined disconnecting and short-circuiting device with thermodynamic control, with an additional back-up fuse, allows for the safe and easy replacement of the protection modules in the case of overload, without disconnection from supply.

The synergy of technologies reduces the damage risk for protective devices caused by installation or insulation faults in the PV circuit. It also reduces the danger of fire due to an overloaded arrester by putting it into a safe electrical state without disturbing the operating state of the PV installation.