Operating handle locking device for circuit interrupter

An operating handle locking device for holding an operating handle of an electrical switchgear in an ON position or in an OFF position, siad operating handle locking device comprising:

• a locking plate having a first aperture for receiving therein the operating handle when it is in the ON position, a second aperture for receiving therein the operating handle when it is in the OFF position, and a blocking portion disposed between said first and second apertures for blocking the movement of the operating handle between said positions;
• a support plate secured to said switchgear for movably supporting said locking plate in an operating handle non-locking position in which the operating handle is disengaged from said first and second apertures;
• a locking means for locking said locking plate in an operating handle locking position relative to said support plate;
• and
• securing members for securing said support plate to said switchgear, said locking plate further having a cover portion for covering said securing members when said locking plate is in the locking position.