Patent ID: 7361857

Claim:
An external operating handle mechanism for a mold cased circuit breaker having a handle, comprising: an external operating handle; a pinion gear, coupled to the external operating handle, which rotates in response to a rotation of the external operating handle; a movable member, comprising a rack gear portion coupled to the pinion gear to be linearly movable according to the rotation of the pinion gear, a handle connecting portion connected to the handle of the mold cased circuit breaker to linearly move the handle of the mold cased circuit breaker, and a plurality of guide shoes; and a pair of guide rail members provided in parallel with each other, wherein the movable member is mounted on the guide rail members via the guide shoes, wherein the movable member includes a body, the guide shoes protrude from side surfaces of the body, and the guide rail members are provided in spaces between the guide shoes and the body.