Keying system for prohibiting association of modular electrical apparatuses e.g. quadripolar circuit breaker, has rivets for grouping set of unipolar circuit breakers forming quadripolar circuit breaker

摘要

The system has rivets (4) for grouping a set of unipolar circuit breakers forming a quadripolar circuit breaker (2). The rivets (4) have lengths corresponding to juxtaposition of widths of the unipolar circuit breakers, where the rivets (4) have a hollow cavity at one of their ends and are cooperated with pins projecting from a lateral surface of a differential switch. The unipolar circuit breakers comprise cases, which are assembled using rivets (5) free of hollow cavity.