Components of thermostatic units and laser welding method for producing the components

A method for joining components of thermostatic systems and thermal relays for low-voltage circuit breakers, said components being constituted by at least one bimetallic element constituted by a lamina with a first face and a second face and at least one connection element comprising a connecting braid that has a substantially flat end part with a third face and a fourth face, wherein the method comprises:

• overlapping and coupling the end part of the first face of said bimetallic element with respect to the third face of the end part of said connection element;
• and
• subjecting the end part of the second face of said bimetallic element to the welding action of laser means to provide a weld between said bimetallic element and said at least one connection element, wherein:
• said laser means scan the second face along a predefined path that follows a curved profile;
• and
• said curved profile is designed entirely within said second face and has no intersecting portions.