Three Phase AC Delay Control Main Control Board (Power On and Power Off) SHTRLY-THD

Customized products, independently developed to replace time relay signals according to customer needs, increase service life, and reduce transportation loss rates. The main function is to sequentially activate the three channel relays through a set delay time when the AC contactor is powered on, to prevent damage to the power grid and equipment caused by instantaneous power on. Built in AC-DC conversion module, which can convert 220V AC to 12V DC power supply. The AC part is equipped with self recovering fuses and varistors. Onboard 3-channel relay, used to control the switch of three-phase AC power.