Drop-out fuse state detection device

The utility model discloses a drop-out fuse state detection device, which comprises a sensor, a displacement ring and a terminal, and is characterized in that the sensor is detachably connected to a fuse tube of a fuse through a connecting piece; the displacement ring sleeves the fuse tube in a sliding manner, the displacement ring is arranged close to a hinge point of the fuse, and the sensor is located between the displacement ring and an operation ring of the fuse; the signal output end of the sensor is connected with the signal input end of the terminal. According to the utility model, the characteristics of the drop-out fuse are utilized, the high end and the low end of the fuse tube are exchanged when the fuse is fused, and the displacement ring automatically triggers the sensor when the fuse is fused, so that automatic detection of fuse fusing is realized; and meanwhile, the sensor is detachably connected with the fuse tube through the connecting piece, and the displacement ring is of a separable doubl