High rating molded case multipole circuit breaker

A low-voltage multipole circuit breaker, for high current intensities, comprising a plurality of poles juxtaposed inside an insulating molded case, each pole comprising a pair of separable contacts, an arc chute, a pair of contact terminal pads connected to the separable contacts and protruding outwards from the case, and a current transformer disposed around one of the contact terminal pads and whose output is connected to a trip device common to the different poles, each pair of contact terminal pads being connected to a pair of connecting strips designed to be connected to a phase of a mains system to be protected, wherein each connecting strip of at least one of the pairs of connecting strips designed to be connected to one of the main phases, is connected to at least two adjacent twinned poles, electrically arranged in parallel, each connecting strip of at least one of the pairs of connecting strips associated with another pole of the circuit breaker having a width such that it extends laterally beyond said pole and partially overlaps the immediately adjacent pole, so that the circuit breaker can be used for a higher rating than that of the individual standard poles which make it up.