Electric pole for low-voltage power circuit breaker

Abstract

An electric pole () for a low-voltage automatic power circuit breaker, comprising: a fixed contact () and a movable contact () that can be coupled/uncoupled with respect to each other, said fixed contact being electrically connected to a phase conductor, and a sensing unit that comprises a first section suitable to accommodate a current sensor associated with the phase conductor, the current sensor generating sensing signals that are indicative of the intensity of the electrical current that flows through the phase conductor, the sensing unit being electrically connected to a protection unit of the automatic power circuit breaker, the protection unit being suitable to receive the sensing signals and to generate control signals for actuation means operatively connected to said movable contact, and comprising at least one input section () provided with one or more electrical input terminals (); whose particularity consists of the fact that the sensing unit comprises a second section (), which is rigidly connected to the first section and is provided with one or more electrical output terminals that are electrically connected to the current sensor, the second section comprising connection means that are suitable to mechanically couple the second section to the input section of the protection unit, so as to provide a direct electrical connection between the electrical output terminals of the second section and the electrical input terminals of the input section.