Coaxial data line protection device for transmission and reception technology suitable for protecting SAT-TV C-Band, WiMAX, WLAN applications and DVB-T2 devices. The DS-N-6 m/f is designed as an N-connector male/female (m=plug/w=socket) and has a high pulse current load capacity of 2.5 kA (10/350). It offers easy installation as an intermediate plug and reduces overvoltages to a low protection level with a high current load at the same time. Optimum transmission behavior is achieved through low reflection behavior and bandwidth optimization for secure transmission up to 6 GHz. The protective device is available in 50 technology.