Overvoltage protection device

The invention relates to an overvoltage protection device (100). The overvoltage protection device (100) is provided with a series circuit comprising an overvoltage protection component (112) and a protection switch (122) connected in series with the overvoltage protection component (112). The overvoltage protection device (100) further comprises a monitoring unit (150) which is designed to detect at least one state parameter of the series circuit, to determine whether the series circuit has a fault state on the basis of the at least one state parameter, and to activate the protection switch (122) to be switched from a closed state to an open state if the series circuit has a fault state. 本发明涉及一种过电压保护装置(100)。该过电压保护装置(100)具有包括过电压保护部件(112)和与该过电压保护部件(112)串联连接的保护开关(122)的串联电路。过电压保护装置(100)还包括监测单元(150)，该监测单元被设计用于探测串联电路的至少一个状态参数，基于该至少一个的状态参数确定串联电路是否存在故障状态，并在存在故障状态时激发保护开关(122)，从闭合状态转换为断开状态。