Abstract: Contactor-circuit breaker comprising a control electromagnet and a protection device both capable of acting on mobile contacts in response respectively to a deliberate control and to a detected electrical fault, through a multi-pole device. An electromagnetic tripping device (41) is added onto a contact control mechanism (40). The protection device (30), preferably interchangeable, is connected to the electromagnet (20) through a control line (33B) and to the control mechanism (40) through a trip line (33A) so that it outputs an electrical power supply to the electromagnet on the control line, and in the case of a fault, a trip signal on the trip line. The electromagnet (20) is of the DC type, and the protection device (30) adapts its power supply voltage.

Abstract: Inductive current sensor and electrical apparatus incorporating this sensor. The magnetic circuit of the sensor comprises a separable part carrying the detector element and is made of a material having a permeability lying between 5 and 100. The circuit reduces the influence of spurious gaps and external interference on the current sensor for the electrical apparatus.

Abstract: A switch having at least one power switching pole includes a contact bridge cooperating with fixed contacts and adapted to be maneuvered either by mobile parts of a solenoid or by a tripping mechanism. The contact bridge is rotatable and the mobile parts of the solenoid operate the contact bridge through the intermediary of a transmission mechanism.