Patent ID: 7948353

Claim:
A power-circuit breaking device, comprising: a first connector housing having a pair of circuit terminals connected with an open power circuit; and a second connector housing closing the power circuit by connecting with the first connector housing, wherein the second connector housing comprises: a fuse having a pair of terminals to be connected with the pair of circuit terminals; a housing having a receiving section for receiving the fuse, a lock member locking the fuse, the lock member arranged in the receiving section, and a stopper preventing the locking member from displacing unexpectedly, the locking member being movable closer to the stopper; and a cover covering an opening of the receiving section of the housing, wherein the cover comprises a limiter functioning to prohibit the lock member from displacing to unlock the locked fuse by positioning the limiter in a section between the stopper and the lock member when the cover is mounted on the housing, and wherein the fuse comprises: a cylindrical fuse body receiving a fuse element; and a pair of terminals having one end portions received in the fuse body so as to be connected with the fuse element and the other end portions arranged outside the fuse body.