Description Modular surge arrester for TN-C systems The modular surge arresters DEHNGuard M... in the functional red/line family design set new standards in terms of safety and comfort. The proven protective circuit with high-performance zinc oxide varistors in combination with the double-acting Thermo-Dynamic Control monitoring device is a hallmark of the DEHNGUARD technology. The fact that both safe surge protection and device safety are the focus of the modular DEHNGuard shows a variety of device features. The application-oriented product designation, which significantly simplifies the correct choice of devices, is also an expression of the stringent safety requirements as the application of the module locking, which is unique for surge protection devices. This firmly fixes the protection modules in the device base part. Neither transport vibrations, nor the enormous power during a discharge process will loosen