FIELD: electrical engineering.
SUBSTANCE: invention relates to the field of electrical engineering and power engineering and can be used for prompt emergency deactivation of electrical equipment due to high temperatures, e.g., in the event of a fire, as well as overloads, overcurrents, short circuits, and electric current leaks. A characteristic feature of the invention is the product simultaneously including a differential and automatic phase breaking mechanism and a zero N deactivation mechanism, a fire extinguishing aerosol generator (FEAG) jointly with an electric FEAG igniter, as well as: a) an initiating thermosensitive device and a deactivating thermosensitive apparatus located in the zone of exposure to the heat caused by the operation of the module of the fire extinguishing aerosol generator (FEAG); b) an initiating thermosensitive apparatus and a deactivating thermosensitive apparatus in mutual series connection.
EFFECT: higher efficiency of primary fire extinguishing and increased effectiveness of preventing the spread of fire in a confined space, in particular, such as an electrical control unit, with a protection against short circuits, overcurrents, overloads, and electric current leaks.
4 cl, 8 dwg
