The pulse suppressor significantly improves the protection of 12V and 24V vehicle electrical systems during welding or emergency starting operations with mains-powered charge/start devices. If the welding machine or the system earthing are not functioning correctly, it intervenes by absorbing the energy according to these maximum parameters: voltage 35V, peak current (8.2 microseconds) 800A, absorption (1 millisecond) 1500W. Weight 482 g.