Assembly for a high-voltage circuit breaker, comprising - one of two continuous-current contact pieces of the high-voltage circuit breaker that is fixed relative to the assembly, said continuous-current contact pieces being able to be moved relative to one another along a switch longitudinal axis, - one of two arcing contact pieces of the high-voltage circuit breaker that is coaxially surrounded at least in some sections by the continuous-current contact piece, said arcing contact pieces being able to be moved relative to one another along a switch longitudinal axis, - a field electrode, which surrounds the arcing contact piece of the assembly in the switched-off state of the high-voltage circuit breaker, moves into the switched-off position during the switch-off process, and, in the switchedon state, is drawn back behind its position assumed in the switched-off state, and - a gear mechanism, via which the field electrode is able to be driven, characterized in that the gear mechanism has a component that is electrically connected to the field electrode and is guided so as to be displaceable in the direction of the switch longitudinal axis, in that the assembly has at least one sliding contact device that electrically connects the component to a structural element, which is fixed to the assembly, of the gear mechanism that is fixedly connected to the continuous-current contact piece of the assembly, and in that the at least one sliding contact device has - at least one spring tab comprising a contact element, and/or - at least one contact element and at least one compression spring that applies force to the respective contact element, and/or - at least one leaf spring. - one of two continuous-current contact pieces of the high-voltage circuit breaker that is fixed relative to the assembly, said continuous-current contact pieces being able to be moved relative to one another along a switch longitudinal axis, - one of two arcing contact pieces of the high-voltage circuit breaker that is coaxially surrounded at least in some sections by the continuous-current contact piece, said arcing contact pieces being able to be moved relative to one another along a switch longitudinal axis, - a field electrode, which surrounds the arcing contact piece of the assembly in the switched-off state of the high-voltage circuit breaker, moves into the switched-off position during the switch-off process, and, in the switchedon state, is drawn back behind its position assumed in the switched-off state, and - a gear mechanism, via which the field electrode is able to be driven, characterized in that the gear mechanism has a component that is electrically connected to the field electrode and is guided so as to be displaceable in the direction of the switch longitudinal axis, in that the assembly has at least one sliding contact device that electrically connects the component to a structural element, which is fixed to the assembly, of the gear mechanism that is fixedly connected to the continuous-current contact piece of the assembly, and in that the at least one sliding contact device has - at least one spring tab comprising a contact element, and/or - at least one contact element and at least one compression spring that applies force to the respective contact element, and/or - at least one leaf spring.