Module for detecting an electrical fault for an electrical protection assembly and electrical protection assembly comprising such a detection module

A module for detecting an electrical fault for an electrical protection assembly, this detection module comprising:

• a housing;
• a first line conductor and a second line conductor, adapted to being connected to power supply lines;
• a first measurement toroid, positioned around the first line conductor and around the second line conductor, for measuring a differential current flowing between the first and second line conductors;
• a second measurement toroid, positioned around the first line conductor, for detecting an electric arc signal flowing through this conductor;
• an electromechanical tripping relay;
• an electronic processing circuit connected to the first and second measurement toroids and configured to switch the relay according to the current measured by the measurement toroids;
• said detection module comprising first and second measurement toroids are aligned with one another, while the first measurement toroid takes the shape of an elongated tube and allows the differential protection to operate with its own current.