The utility model discloses a control by temperature change cabinet concentrator, including protection groove and switch box, protection groove pass the switch box setting, and the control by temperature change cabinet position of being qualified for the next round of competitions is close to in the switch box setting on protection groove, be provided with a plurality of independent switchs on the switch box respectively, the number of independent switch is the same with the branch number of the secondary lead -out wire of control by temperature change cabinet, protection groove's a tip is connected with control by temperature change cabinet secondary lead end, and the other end is the blind end, and is provided with on the terminal surface and connects female head, and still including a plurality of quick wiring, the one end of quick wiring is provided with and connects female first joint foreman who corresponds, and the other end is provided with and is used for the plug that is connected with the heater. The utility model discloses at the long distance current -carrying part, the mode of adoption fixed line and protection groove steel prevents that the secondary line loss is bad, apart from the welding nearer position in place, the mode of adoption activity slot, can be at any time according to the position of weld bond, select the thermal treatment heater wire of different length, increase the flexibility.