Current limiter and/or circuit breaker with ptc element

Details Current limiter and/or circuit breaker with ptc element Current limiter and/or circuit breaker with ptc element

H - Electricity

01

C

H01C 7/02 (2006.01) H01C 1/14 (2006.01) H01C 7/13 (2006.01) H01H 9/42 (2006.01) H01H 71/00 (2006.01) H01H 71/14 (2006.01) H01H 77/10 (2006.01) H02H 3/02 (2006.01)

Patent

CA 2233351

A current limiter composed of a PCT element the resistance of which is abruptly increased by rise of temperature above a resistance transition temperature and a pair of electrode plates secured to opposite surfaces of the PTC element, wherein the PTC element is formed thinner at its outer peripheral portion than at its central portion so that the specific resistance of the central portion becomes smaller than that of the outer peripheral portion.

Limiteur de courant composé d'un élément CTP dont la résistance est soudainement augmentée par une hausse de la température au-dessus de la température de transition de résistance et une paire de plaques-électrodes fixées sur les surfaces opposées de l'élément CTP, où l'élément CTP est plus mince dans sa partie périphérique extérieure que dans sa partie centrale de sorte que la résistance de sa partie centrale devient plus faible que celle de sa partie périphérique extérieure.

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