Fuse for electric machinery

The utility model relates to a fuse for electric machinery, its technical scheme is: including shell, metal attachment, bolt, indicating device, instruction fuse -element, fusion tube, quartz sand, work fuse -element and knife contact, the both ends of shell are respectively through bolted connection metal attachment, the inside steady job fuse -element of shell, the work fuse -element connect to instruct the fuse -element, the outside of instructing the fuse -element is equipped with the fusion tube, the instruction fuse -element connect indicating device, the fusion tube in be equipped with the quartz sand, the external connection knife contact of work fuse -element, between fuse -element vacuole formation of instruction fuse -element and work, the beneficial effects of the utility model are that: simple structure, use, simple to operate, easy operation, it is laborsaving, install and remove the convenience, with low costs, it is effectual to fuse, the stable performance, application scope is wide, long ser