Electronic cut-off protection device

An electronic cut-off protection device comprising at least;

• at least one phase current line and a neutral current line,
• at least one current sensor capable of and designed to at least measure the current flowing in said at least one phase current line and to generate an acquisition signal representative of the image of the current flowing in said at least one phase current line,
• an electronic protection trigger circuit electrically connected with said current sensor and capable of and designed to at least process said acquisition signal and, where appropriate, to generate a first protection trigger command signal representative of the occurrence of a fault of the overload type, said electronic protection trigger circuit having a response time in the range between 10 milliseconds and 1 second,
• an electronic cut-off unit comprising at least one power cut-off electronic component respectively disposed on said at least one phase current line, wherein said electronic cut-off protection device comprises an analog protection trigger circuit, configured for receiving a signal representative of the voltage across the terminals of the electronic cut-off unit, connected to the electronic cut-off unit and arranged for comparing the signal representative of the voltage across the terminals of the electronic cut-off unit with a predetermined threshold value and, in the case of said threshold value being exceeded, generating a second protection trigger command signal representative of the occurrence of a fault of the EMC shockwave type or of the short-circuit type, said analog protection trigger circuit having a response time in the range between 1 microsecond and 10 milliseconds,
• in that said triggering of the electronic cut-off unit is capable of and designed to at least be controlled by said first protection trigger command signal and/or by said second protection trigger command signal, so as to open said at least one cut-off electronic component,
• and in that said electronic cut-off protection device furthermore comprises an electrical power supply configured for supplying the electronic protection trigger circuit and the analog protection trigger circuit.