The invention provides a contact head system, a one pole arc-extinguishing chamber employing the same and a load switch. The contact head system comprises a static contact head seat arranged on one end of an insulating cylinder, a static contact head is arranged on the static contact head seat, and an outer periphery is provided with an insulating support rack; an arc extinguishing disc is fixed on one end, facing toward a movable contact rod, of the insulating support rack; the arc extinguishing disc is provided with a via hole through which the movable contact rod can run and can be plugged in or separated from the static contact head, the insulating support rack is provided with an arc extinguishing wire coil, and one end of the arc extinguishing wire coil is connected with an arc extinguishing disc while the other end is connected with the static contact head seat. The beneficial effects of the contact head system, the one pole arc-extinguishing chamber employing the same and the load switch are that the arc-extinguishing chamber is simple and compact in structure and strong in arc extinguishing capability, all of an arc extinguishing structure is arranged on one side of the static contact head seat, and therefore the movable contact rod can be the only one moving part and the quantity of moving parts can be greatly reduced; a load for an operation mechanism can be lowered, and opening and closing performance of movable and static contact heads can be improved.