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Safety fuse

This is an example of the safety fuse simulation, performed with QuickField software.

Problem Type:
Plane problem of heat transfer.

Geometry:
Safety fuse Determine the operating time at short-circuit current of 40 A Conductor Porcelain Sand 40 mm Ø 32 mm 40 mm

Given:
Conductor diameter: 2 mm;
Conductor melting point T = 1050 °C;
Nominal current I = 15 A.

Problem:
Determine the operating time at short-circuit current of 40 A.

Result:

Fuse temperature vs. time:

safety-fuse short-circut current

Fuse will terminate the current in 5.5 sec.

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