LUMEL the biggest polish producer of electrical measuring instruments offers: - 1-phase power controllers - destined for a fluid power control (output current from 5 to 125 A), - 3-phase power controllers - destined for a fluid power control (output current from from 50 to 450 A), - 1 and 3-phase solide state relays - destined for contactless power switching (output current from 5...60 A)