Draw-out type 1/4 unit circuit distribution adapter

The invention relates to a draw-out type 1/4 unit circuit distribution adapter. The adapter comprises a metal casing, main inlet wire terminals installed at a back plate of the metal casing, four sets of switching wire outlet terminals installed at the back plate of the metal casing, four sets of drawer inlet wire connection terminals installed at a front plate of the metal casing and four sets of drawer outlet wire connection terminals installed at the front plate of the metal casing. The main inlet wire terminals communicate with the four sets of drawer inlet wire connection terminals. The four sets of drawer outlet wire connection terminals communicate with the four sets of switching wire outlet terminals correspondingly. Three-phase plugs of the main inlet wire terminals are arranged in steps and are connected with inlet wire copper bars correspondingly. The inlet wire copper bars connect with the drawer inlet wire connection terminals correspondingly, and the drawer inlet wire connection terminals are in staggered floor arrangement at the front plate of the metal casing. The drawer outlet wire connection terminals are arranged in a straight line, and connect with the switching wire outlet terminals correspondingly. According to the invention, through reasonably arranging the drawer outlet wire connection terminals, and distribution positions and connection modes of the drawer outlet wire connection terminals, a structure of the adapter becomes more compact and reasonable. Simultaneously through reducing material usage, the circuit distribution adapter has an advantage of low cost.