Patent ID: 7659709

Claim:
An electric current sensor comprising a housing ( 2 ), a magnetic circuit ( 4 ) comprising a magnetic core and a magnetic field detector ( 5 ) that has a detector cell ( 25 ) disposed in an air-gap ( 18 ) formed between ends ( 19 , 20 ) of said core, the magnetic field detector comprises a support board ( 26 ) on which the detector cell is mounted essentially in parallel to said support board, the support board having a notch ( 30 ) adjacent and facing the detector cell, an end ( 19 ) of said core ( 17 ) of said magnetic circuit ( 4 ) being disposed in the notch and wherein the housing is provided with axial rails making it possible to insert the support board ( 26 ) into the housing in an axial direction which is essentially orthogonal to said midplane of the magnetic core and parallel to said support board, edges of the circuit board engaging in the axial rails.