| 主权项 |
1. A plastic-shell-encased circuit breaker having an automatic locking function, comprising:
a plastic-shell-encased circuit breaker body; a user input unit for inputting a lock code or an unlock code; an authentication processing unit for receiving the lock code or the unlock code from the user input unit, and for outputting a control signal after authentication; and a locking action unit for receiving the control signal from the authentication processing unit, and for enabling the plastic-shell-encased circuit breaker body to produce a self-locking or unlocking action; wherein the plastic-shell-encased circuit breaker body comprises: a shell body; and an on-off action mechanism provided in the shell body for achieving normal circuit on-off function of the plastic-shell-encased circuit breaker; wherein the on-off action mechanism comprises: a handle, provided outside the shell body; a conductive static contact block; a conductive movable contact arm, which swings around a rotating shaft, so as to be contacted with or separated from the conductive static contact block; and a linkage control group, comprising a plurality of linkage elements which are coupled, wherein the handle controls swings of the conductive movable contact arm through the linkage control group; wherein the locking action unit comprises: a linkage rod, which is provided in the shell body and is capable of swinging, wherein the linkage rod has an ejection end and a trigger end, the ejection end is attaching with a linkage element in the linkage control group; an electromagnet, wherein an end of an armature thereof is matched with the trigger end of the linkage rod; an action control circuit for receiving the control signal, so as to control electrifying state of coils of the electromagnet. |
