Operating at 480 Vac with capacities of 100–400 A, ECOsine Systems provide harmonic compensation up to 50th order in real-time, as well as reactive compensation and load current load balancing. Systems incorporate individually fused automatic harmonic filters, high-speed digital microcontroller, disconnect switch, door interlock, operator selector switch, indicating lights, keypad, and graphic display. Housed in NEMA1/NEMA3R enclosures, units communicate via TCP/IP or RS-485 Modbus interfaces.