An electricity meter for installation in or at a building accommodating a customer (A, B) of an electric power company, for measuring the consumption of energy supplied to the customer (A, B), the electricity meter comprising a power input for connection to an electric power supply circuit provided by the electric power company; a power output for supplying electric power to an electric circuit associated with the customer (A, B); power measuring means for obtaining a measure of power delivered to the electric circuit; means for obtaining an amount of electric energy supplied to the electric circuit; monitoring means for monitoring whether or not the measure of power delivered to the electric circuit complies with a specified limit; command generating means for generating a disconnection command in response to the measure of power exceeding the specified limit, said command generating means being embodied by means of a microcontroller circuit having a central processing unit; transmitter means for transmitting said disconnection command via power line communication over said electric circuit connected to said power output to at least one remote controllable disconnector module arranged in the electric circuit (16, 14), over current protection means for interrupting the output of power of the electricity meter in case the electric current supplied at the power output of the electricity meter exceeds a specified current threshold for more than a specified period of time, and driving means for tripping said over current protection means in response to a signal from the microcontroller circuit if the electricity power supplied at the power output exceeds a specified current threshold for more than the specified period of time, if the measure of power has been detected to exceed the specified limit, the central processing unit of the electricity meter is configured to, in a first loop if the electric circuit has one remote controllable disconnector module: - set a timeout period, the timeout period being used for setting a maximum time period in which the execution of the disconnection command from the electricity meter by the remote controllable disconnector module has to be successful, - determine whether a current supplied by the electricity meter is still above the specified limit, - determine whether the set timeout period has expired or not, if it is determined that the current supplied by the electricity meter is still above the specified limit, - to repeat the transmission of said disconnection command if the specified timeout period has not yet expired, and - if the timeout period has expired, to set an alarm bit and storing a related time stamp in a memory of the electricity meter and to generate a tripping command for tripping said overcurrent protection means, and if the electric circuit has more than one remote controllable disconnector module and if after the timeout set in the first loop the first loop is left by determining that the current supplied by the electricity meter is still above the specified limit, the central processing unit of the electricity meter is configured to: - enter a further loop wherein disconnection commands are sent to all remote controllable disconnector modules and to set the alarm bit, to store the time stamp and to trip said overcurrent protection means only if the further loop is left after a further timeout period by determining that the current supplied by the electricity meter is still above the specified limit. - set a timeout period, the timeout period being used for setting a maximum time period in which the execution of the disconnection command from the electricity meter by the remote controllable disconnector module has to be successful, - determine whether a current supplied by the electricity meter is still above the specified limit, - determine whether the set timeout period has expired or not, if it is determined that the current supplied by the electricity meter is still above the specified limit, - to repeat the transmission of said disconnection command if the specified timeout period has not yet expired, and - if the timeout period has expired, to set an alarm bit and storing a related time stamp in a memory of the electricity meter and to generate a tripping command for tripping said overcurrent protection means, and - enter a further loop wherein disconnection commands are sent to all remote controllable disconnector modules and to set the alarm bit, to store the time stamp and to trip said overcurrent protection means only if the further loop is left after a further timeout period by determining that the current supplied by the electricity meter is still above the specified limit.