LOW-VOLTAGE MULTIPOLE CIRCUIT BREAKER WITH HIGH ELECTRODYNAMIC RESISTANCE, WHEREOF THE POLE SHAFT IS ARRANGED IN THE COMPARTMENT HOUSING THE POLES

摘要

A LOW-VOLTAGE MULTIPOLE CIRCUIT BREAKER (10) WITH HIGH ELECTRODYNAMIC STRENGTH COMPRISES A CASE MADE OF INSULATING MATERIAL, SUBDIVIDED INTO A FRONT COMPARTMENT (12) HOUSING AN OPERATING MECHANISM (24) COMMANDING OPENING AND CLOSING OF THE CIRCUIT BREAKER AND A REAR COMPARTMENT (14) SEPARATED FROM THE FRONT COMPARTMENT BY AN INTERMEDIATE WALL (20). THE REAR COMPARTMENT (14) IS ITSELF SUBDIVIDED INTO INDIVIDUAL COMPARTMENTS (36) BY SEPARATING PARTITIONS (38), EACH INDIVIDUAL COMPARTMENT (36) HOUSING ONE OF THE POLES (56) OF THE CIRCUIT BREAKER. THE OPERATING MECHANISM (24) IS LINKED TO A POLE SHAFT (78) COMMON TO ALL THE POLES (56). THE POLE SHAFT (78) IS LOCATED IN THE REAR COMPARTMENT (14) AND SUPPORTED BY BEARINGS PASSING THROUGH THE SEPARATING PARTITIONS.