Abstract: A power distribution board includes a blind cover and main and shunt interrupters. A blind cover has an engaging tab disposed at one end for engaging an edge of the window, and a foldable engaging tab at the other end of the blind cover main body. The foldable tab holds, in cooperation with the engaging tab, the blind cover to the distribution panel board cover. The shunt circuit interrupters are mounted in a side-by-side relationship with an insulating partition wall interposed therebetween. The partition wall is accommodated within recesses in the side surfaces of the interrupters, so that dielectric breakdown does not ocur around the gas exhaust ports. One side of the main circuit interrupter is secured to a base plate by the rigidity of a connecting conductor while the other side of the interrupter is secured in a usual manner.

Abstract: An improved terminal assembly for a panel board is disclosed which is simple in construction, easy to assemble and low in manufacturing costs. The panel board terminal assembly includes a bus bar mounted on support members formed of an electrically insulating material and a plurality of terminal frames each in the form of a substantially U-shaped cross section having a pair of opposed side walls and an intermediate wall interconnecting the side walls. The side walls have a pair of aligned openings formed therethrough into which the bus bar is inserted. A plurality of terminal screws are each threaded in the intermediate wall of each terminal frame for clamping an external conductor between the shank of each screw and the bus bar.