A snap-action drive for a switching device has an energy store, a swinging movable part and a securing device for the movable part. The securing device secures a position of the swinging movable part by a force effect, wherein a reversal of direction of the movable part takes place counter to the force effect.

A snap-action drive for a switching device has an energy store, a swinging movable part and a securing device for the movable part. The securing device secures a position of the swinging movable part by a force effect, wherein a reversal of direction of the movable part takes place counter to the force effect.

Component with bus termination. A component (3, 4, 7-9, 13, 27) for a combustion appliance such as an appliance having a boiler, the component (3, 4, 7-9, 13, 27) comprising an outer surface and a tangible, electric interface (30, 32, 35, 36) configured to be electrically connected by a user such that the tangible, electric interface (30, 32, 35, 36) is in a short circuit condition and configured to be electrically disconnected by the user such that the tangible, electric interface (30, 32, 35, 36) is open circuit condition; wherein the tangible, electric interface (30, 32, 35, 36) is arranged on the outer surface of the component (3, 4, 7-9, 13, 27) such that the tangible, electric interface (30, 32, 35, 36) is accessible to the user; the component (3, 4, 7-9, 13, 27) comprising first and second bus wires.