How Does The Double-locking Mechanism Of A Fuse Prevent The Fuse Tube From Falling Out Abnormally?

Conventional fuse designs may experience issues such as fuse tube loosening or even falling out during transportation, vibration, or daily operation. This can lead to poor contact, power outages, or increased maintenance burden. To improve this phenomenon, a double locking mechanism can be introduced to enhance the mechanical bond between drop out fuse and its carrier and to suppress abnormal detachment of the fusible tube.

The double-locking structure employs two independent locking points, ensuring the fuse tube remains firmly positioned even under varying forces. Compared to single-point locking, double-locking exhibits greater resistance to external vibrations or assembly adjustments, a feature considered effective in extending device lifespan in vibration environment design standards. By adding a second lock, the displacement space of the fuse assembly during mechanical disturbances is reduced, thereby minimizing electrical contact problems caused by positional misalignment.