MX Series Inverters are the world's first truly redundant, modular inverter system; the most reliable inverter system available. Inverter systems up to 20KW at 120 Vac single phase, 40KW at 240 Vac bi-phase or 60KW at 208 Vac 3 phase. EXELTECH manufactures the world's first truly redundant, modular inverter system; the most reliable inverter system available. No single malfunction will cause the inverter system to fail. Modules are "hot" insertable. Power levels are expandable, and modules can be added or replaced without interruption in power to your critical loads.