Patent ID: 7119652

Claim:
A fuse assembly comprising: an electrically insulating hollow casing of a substantially rectangular parallelepiped shape in outline; a fuse element provided within said casing and supported by said casing; said casing having first and second spheroidal concaves provided therein for facilitating reflecting and converging of shock waves into focuses at the time when an arc discharge is generated due to blowing of said fuse element and said shock waves are then produced; said first and second spheroidal concaves being disposed side by side along a longitudinal direction of said casing and partially overlapping each other in the longitudinal direction of said casing in such a manner that inner foci of said concaves are overlapped with each other; and a pair of spaced apart electrodes provided at both ends of said casing; said fuse element being electrically connected to said spaced apart electrodes and bridged between said spaced apart electrodes.