Temperature-dependent switch

A temperature-dependent switch that comprises a first stationary contact, a second stationary contact, and a temperature-dependent switching mechanism having a movable contact member,

• wherein the switching mechanism, in a first switching position, presses the movable contact member against the first stationary contact and thereby produces an electrically conductive connection between the first stationary contact and the second stationary contact via the movable contact member and, in a second switching position, keeps the movable contact member spaced apart from the first stationary contact,
• wherein the switching mechanism comprises a first temperature-dependent snap-action part which is fixed to the movable contact member at a center of the first temperature-dependent snap-action part and configured to switch from a first geometric low-temperature configuration to a first geometric high-temperature configuration when exceeding a first switching temperature, and to switch from the first geometric high-temperature configuration back to the first geometric low-temperature configuration when subsequently falling below a first reset temperature,
• wherein the switch further comprises a second temperature-dependent snap-action part which is configured to switch from a second geometric low-temperature configuration to a second geometric high-temperature configuration when exceeding a second switching temperature, and to switch from the second geometric high-temperature configuration back to the second geometric low-temperature configuration when subsequently falling below a second reset temperature,
• wherein switching the first temperature-dependent snap-action part from the first geometric low-temperature configuration to the first geometric high-temperature configuration and/or switching the second temperature-dependent snap-action part from the second geometric low-temperature configuration to the second geometric high-temperature configuration brings the switching mechanism from the first switching position to the second switching position,
• wherein the second reset temperature is lower than the first reset temperature,
• wherein the second temperature-dependent snap-action part is configured to keep the movable contact member spaced apart from the first stationary contact even if the switch has heated above the first switching temperature and the second switching temperature and has subsequently cooled down to a temperature between the first reset temperature and the second reset temperature, and
• wherein the second temperature-dependent snap-action part is configured to bring the switching mechanism from the second switching position back to the first switching position when the switch has heated above the first switching temperature and the second switching temperature and has subsequently cooled down to a temperature equal to or lower than the second reset temperature.