FIELD: electrical equipment for internal-combustion engines. SUBSTANCE: device has two fixed contacts, movable assembly connected to central part of movable contact whose leads may interact with fixed contacts, and control electromagnet incorporating solenoid and moving core displacing from initial idle position to extreme position where it is stopped by locking member carrying movable assembly so that movable contact is arranged end relative to fixed contacts to attain extreme position. Movable contact can elastically bend like beam under the action of its interaction with fixed contacts. When core strikes locking member, fixed contacts vibrate relative to their normal working positions. Movable contact is made so that when fixed contacts start vibrating, its leads follow displacement of fixed contacts; acceleration in their own vibration is higher than that of fixed contacts and their amplitude of vibration is higher than that of fixed contacts. EFFECT: improved design. 4 cl, 2 dwg
