The invention provides a convenient-to-operate insulated baffle for charged replacement of an arrester on a switch crossarm. The insulated baffle comprises an insulated baffle main leaf and an insulated baffle auxiliary leaf, wherein the baffle main leaf and the baffle auxiliary leaf are connected through hinges, and the hinge opening angle does not exceed 90 degrees; the baffle main leaf and thebaffle auxiliary leaf are both in a rectangular plate shape, and the lower surface of the baffle main leaf is provided with a fixing device for fixation to the switch crossarm; the fixing device comprises a fixing block, a locking block cooperating with the fixing block and an adjustment screw; the fixing block comprises two side walls and a connecting wall connected with the two side walls, wherein the two side walls are arranged in a spaced mode to form an installation slot, the locking block is located in the installation slot, and one side wall of the fixing block is provided with a screwhole; one end of the adjustment screw is connected with the locking block, the other end of the adjustment screw penetrates through the screw hole, and the adjustment screw can move along the axial direction of the screw hole to adjust the space between the locking block and the other side wall of the fixing block; and the unfolded insulation baffle is placed on the switch crossarm to realize insulated sheltering of components and equipment on the switch crossarm, so that operation is convenient.