Household appliance which comprises a lockable component with a latch device and a system for operating the latch device ; wherein the latch device comprises a switch which is designed, by means of a switching process, to move a bolt into a counterpart in order to lock the latch device or to move the bolt out of the counterpart in order to unlock the latch device ; wherein the system comprises - an energy supply which is designed to provide electrical energy; - at least one electrical energy storage device which is designed to be charged with electrical energy from the energy supply ; wherein the energy storage device has a storage capacity for storing electrical energy for at least one switching process of the latch device ; and - a control circuit which is designed to operate the switch of the latch device using electrical energy from the energy storage device , in order to bring about a switching process; wherein, for a switching process, the control circuit requires a minimum electrical power for operating the switch ; wherein the energy storage device has a discharge power which is equal to or greater than the minimum power; characterized in that the energy supply has a maximum power which is less than the minimum power; and - a fuse between the energy supply and the energy storage device , said fuse being designed to interrupt an electrically conductive connection between the energy supply and the energy storage device when a current via the electrically conductive connection reaches or exceeds a threshold value of the current; and/or - an ohmic limiting resistor on the electrically conductive connection between the energy supply and the energy storage device , said limiting resistor being designed to limit the current on the electrically conductive connection. - an energy supply which is designed to provide electrical energy; - at least one electrical energy storage device which is designed to be charged with electrical energy from the energy supply ; wherein the energy storage device has a storage capacity for storing electrical energy for at least one switching process of the latch device ; and - a control circuit which is designed to operate the switch of the latch device using electrical energy from the energy storage device , in order to bring about a switching process; wherein, for a switching process, the control circuit requires a minimum electrical power for operating the switch ; wherein the energy storage device has a discharge power which is equal to or greater than the minimum power; characterized in that the energy supply has a maximum power which is less than the minimum power; and - a fuse between the energy supply and the energy storage device , said fuse being designed to interrupt an electrically conductive connection between the energy supply and the energy storage device when a current via the electrically conductive connection reaches or exceeds a threshold value of the current; and/or - an ohmic limiting resistor on the electrically conductive connection between the energy supply and the energy storage device , said limiting resistor being designed to limit the current on the electrically conductive connection. <EOS>