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Although small in size, fusible links play a significant role in ensuring the success of various fire suppression fixtures within commercial properties.
Generally speaking, fusible links—which can be connected to fire doors, windows, vents and more—consist of two metal pieces bonded together with a fusible alloy.
In the event of a fire, this alloy will melt and the two metal pieces will separate following exposure to high temperatures, thus automatically closing or activating the fixture the link was connected to and promoting adequate fire suppression capabilities. For instance, if a fusible link was connected to a fire door, the separation of the link would ensure the door closes during a fire, blocking flames and smoke from trveling to different areas or fire divisions throughout the affected property.