Fusible Link6638395

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Fusible links include mechanical and electrical devices.

A mechanical fusible link is a device consisting of two strips of metal soldered together with a fusible alloy that is developed to melt at a particular temperature, therefore permitting the two pieces to separate. Mechanical fusible hyperlinks are utilized as the triggering device in fire sprinkler systems and mechanical automatic door release mechanisms that close fire doors in warehouses, etc. Some higher-security safes also utilize fusible link-primarily based relockers as a defense against torches and heat-producing tools. Mechanical fusible hyperlinks come in a variety of styles and different temperature ratings.

An electrical fusible link is a type of electrical fuse that is constructed simply with a brief piece of wire usually four American wire gauge sizes smaller than the wire that is becoming protected. For example, an AWG 16 fusible link may be utilized to shield AWG 12 wiring. Electrical fusible hyperlinks are common in higher-current automotive applications. The wire in an electrical fusible link is encased in higher-temperature fire-resistant insulation to reduce hazards when the wire melts.

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