The highpower softstart board uses FR4 fiber PCB, the size is 74mm X 57mm X 1.6mm, the height of the finished board is only 26MM, the circuit is original and new design, the relay shortcircuits the power resistance after the poweron delay, and the power resistance adopts 4 pieces of NTC 10D20 The thermistor with negative temperature coefficient can make the load voltage rise smoothly to the mainsprotect the rectifier bridge and the capacitor of the pond, and prolong the service life of the electrical appliance. There is no problem with the actual measurement of the 2000W load. With 30A 6600W sealed relayThe working principle of the circuit is that when the power is turned on the poweron delay, the NTC is connected in series in the output load circuit to reduce and control the starting current (delay circuit control) the shortcircuit NTC is completed after the start, and the power is directly output. Complete the soft start process. (24V relay controls 220V voltage output) circuit design, no need to connect a small transformer separately, soft start mainly protects the rectifier bridge, and the pond capacitor, avoids blowing up and the breakdown capacitor, and prolongs service life. The current is controlled at 5A, to avoid the impact of the power grid when starting, and to prevent the power supply from .material: plasticColor as shownPackage Contents:1 x Soft Start Protection BoardOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/ 13cm.