ES238242U - Perfected thermal circuit breaker. (Machine-translation by Google Translate, not legally binding) - Google Patents

Abstract

Improved thermal circuit breaker, which being of those with a bimetallic sheet susceptible to thermal deformation, and an elastic sheet that cooperates with the previous one in the opening and closing of the circuit by means of respective contacts duly fixed to them, essentially characterized because the sheet bimetallic is fixed to the base of the device by means of two supports arranged in end areas, the contact of the sheet being located outside one of these supports, the said bimetallic sheet adopting an arched position in normal conditions that determines the closure of the contacts, while gradually increasing the temperature in it, its curvature also decreases progressively until, suddenly, it changes direction causing the circuit to open, having been foreseen that on the bimetallic sheet and in the area corresponding to the support next to the contact, a position rocker switch is placed bistable, which changes position in correspondence with the change of curvature of the bimetallic sheet, so that once the circuit breaker has tripped, through the aforementioned pulsator it can recover its primitive position, with the peculiarity that starting from the rest position corresponding to the closed circuit, the actuation of said push button causes the voluntary opening of the circuit, in the manner of a switch. (Machine-translation by Google Translate, not legally binding)