ELECTRICAL CURRENT SENSOR WITH GROUNDED MAGNETIC CORE

An electrical current transducer (2) comprising a housing (4), at least one magnetic core (6) comprising an air gap (14) and defining a central passage (12) configured to receive a primary conductor (1) carrying a primary current to be measured through the central passage, a magnetic field detector (16) positioned at least partially in the air gap, and a grounding element (10, 10', 10"). A lateral surface (14b) of the magnetic core is positioned against the grounding element without direct fixed attachment between the magnetic core and the grounding element, and the grounding element overlaps the magnetic core to an extent configured to ensure that a capacitive coupling (C3) between the magnetic core and the grounding element is greater than a capacitive coupling (C2) between the magnetic core and the magnetic field detector.