Tronic HS 300K-TP-SBW 300KVA Three-Phase Voltage Regulator, 380V Output

Our review

This is a three-phase voltage regulator stabilizer built around the HS 300K-TP-SBW model, rated at 300KVA with a 380V output. It accepts an input swinging between 304V and 456V AC and corrects it to within roughly plus or minus 4 percent, at a stated 92 percent efficiency. That combination points to industrial and commercial settings where motors, machinery or process equipment cannot tolerate the voltage dips and surges common on many supply lines. Before committing, work out your actual connected load in KVA and confirm it sits comfortably inside the 300KVA rating, since a stabilizer sized too close to peak demand will trip or age quickly. Check whether your equipment truly needs three-phase 380V, and whether the incoming supply stays within the stated 304V to 456V window, because a regulator cannot correct what falls outside its range. Compare against servo-motor and static or SCR-based units: servo types handle wider swings and heavier surges, while static designs respond faster but usually cost more. Also weigh efficiency, since 92 percent means real losses at this capacity, and plan for ventilation and floor space. It is available on Sokonia.