Fusible link

Heat sensor of a fire extinguishing system closed with a fusible link, which opens at 72 ° C

The fusible link is part of a thermally effective mechanical device and is manufactured using solder . A mechanically pre-stressed device is actuated by the melting of the solder.

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Use in thermal release devices of fire protection systems

The thermal release via a fusible link at a specified temperature enables a wide variety of functions, for example:

• the opening of fusible link sprinklers
• the separation of mechanical cable releases from fire extinguishing systems
• the opening of pneumatic heat sensors in fire extinguishing systems
• closing fire dampers .

Use in safety valves in gas pipes

When a specified temperature is reached, the solder melts and the thermal safety valve automatically closes the gas line, thus preventing possible gas explosions.