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.
Calculate the temperature of the fuse
First the DC conduction electric problem is simulated to compute current density and losses in the elements. Then heat transfer problem is simulated.
Current density distribution in the fuse.
Losses distribution: terminals 0.27W, fuse 1.9W, sticker 0.55W.
Temperature distribution in the fuse current limiter. Fuse central part temperature is 48 °C.