Low-voltage circuit breaker with interchangeable poles

A method for assembling a low-voltage circuit breaker, the method comprising:

• preparing a containment structure for said circuit breaker;
• preparing a control mechanism for said circuit breaker;
• preparing a plurality of circuit breaking poles chosen between a first type of pole and a second type of pole,
• wherein said first type of pole comprises a first housing containing a first fixed contact and a corresponding first moving contact that can be coupled to said first fixed contact by means of its rotation around a point, and
• wherein said second type of pole comprises a second housing containing a second fixed contact and a corresponding second moving contact that can be coupled to said second fixed contact by means of a translatory movement along an axis;
• preparing a first kinematic coupling between said control mechanism and said first moving contact;
• preparing a second kinematic coupling between said control mechanism and said second moving contact;
• placing said control mechanism and said plurality of poles inside said containment structure;
• and
• mechanically connecting the control mechanism to the poles by means of said first kinematic coupling, in the case of the poles belonging to said first type of pole, or by means of said second kinematic coupling, in the case of the poles belonging to said second type of pole, wherein said stage for the mechanical connection of the control mechanism to the poles comprises operatively connecting one of said kinematic couplings to an interface of said control mechanism.