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Fuse current limiter

Problem type:
3D problem of DC conduction, heat transfer

Geometry:

Given:
Electrical conductivity of the steel: γ = 10 MS/m,
Electrical conductivity of the copper: γ = 56 MS/m,
Rated current I = 100 A. Thermal conductivity of the porcelain body = 2 W/K-m,
Ambient temperature T = +20°C.

Task:
Calculate the temperature of the fuse

Solution:
Fist the DC conduction electric problem is simulated to computer current density and losses in the elements. Then heat ftasfer problem is simulated

Result:
Current density distribution in the fuse.
Losses distribution: terminals 15W, fuse 20W, plates 2W.

Temperature distribution in the fuse current limiter.