HEAT-SENSITIVE SWITCH Russian patent published in 2010 - IPC H01H37/54 

FIELD: electricity.

SUBSTANCE: invention refers to the sphere of electrical engineering. Heat sensitive switch comprises tight reservoir (2), including metal jacket (3) and base (4), at least one conducting terminal pin (10A, 10B), tightly fixed in through hole (4A, 4B), fixed contact (8) fixed on terminal pin (10A, 10B) in reservoir 2, heat sensitive plate (6), one end of which is electrically connected and fixed on internal surface of reservoir (2), and curvature direction of which changes at specified temperature for reverse one, and at least one movable contact (7) fixed to another end of heat sensitive plate (6). Both fixed contact (8) and movable contact (7) comprises contact part with application of silver-oxide of tin-indium. Reservoir (2) is filled with gas having content of helium 50-95%, which creates pressure inside reservoir (2), which at room temperature makes 0.25-0.8 atm.

EFFECT: prolonged service life, reduced dimensions and improved characteristics of current breaking.

12 cl, 8 dwg