Blown fuse indicator for electrical fuse

Details Blown fuse indicator for electrical fuse Blown fuse indicator for electrical fuse

G - Physics

01

R

G01R 31/327 (2006.01) H01H 85/02 (2006.01) H01H 85/30 (2006.01)

Patent

CA 2235780

A blown fuse indicator, comprising an insulating element, a current-carrying element overlaying the insulating element, and a substantially transparent window. A chemical composition coats at least a portion of the insulating element. The improvement comprises a meltable link in generally parallel proximity to the insulating element. The meltable link, which can be made of solder, melts to open an indicating circuit of the blown fuse indicator upon predetermined thermal overload conditions.

Indicateur de fusible grillé, comprenant un isolant, un conducteur recouvrant l'isolant et une fenêtre essentiellement transparente. Un composé chimique enrobe au moins une partie de l'isolant. L'amélioration consiste en un lien liquéfiable situé généralement près de l'isolant et parallèle à ce dernier. Le lien liquéfiable, pouvant être constitué de soudure, fond dans des conditions de surcharge thermique afin d'ouvrir un circuit indicateur de fusible grillé.

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