Cummins ATS400-208-120V-3P-4W Automatic Transfer Switch delivers automatic switching for 400-amp, 3-phase power in 4-wire systems, enabling seamless transfer between utility and standby generator sources. Designed for 208/120V operation, it fits typical commercial power distribution configurations. When the primary supply fails or falls outside preset parameters, the switch automatically transfers connected loads to the alternate power source, helping preserve uptime for critical equipment.
