The invention discloses a heat dissipation shell for a fuse type isolating switch. The heat dissipation shell comprises a pedestal, an upper cover and heat dissipation bases. The pedestal comprises a base, and left and right side plates mounted at two sides of the base. The rear end of the upper cover is movably connected with the base through a hinge shaft. A box body with opened front and rear ends is enclosed by the upper cover and the pedestal. The space in the box body is separated into three independent partitions through two longitudinal clapboards. The three independent partitions are arranged transversely. The bottom end of each longitudinal clapboard is fixed on the base. A positioning slot located on the base, a pair of conductive boards, a pair of sockets and a pair of wiring bolts are arranged in each independent partition. One heat dissipation base is arranged in each independent partition. Through matching of the heat dissipation shell for the fuse type isolating switch provided by the invention with a heat dissipation block, the heat dissipation performance of the isolating switch can be improved, the integrated temperature rise of the isolating switch can be reduced by Ks or even more than ten Ks, and the problem of overhigh temperature rise is solved.