Eaton® T2235 Series Automatic Transfer Switches (eATS) are Enclosure Power Distribution Units (ePDU®) that provide distribution of primary power to controlled devices. They are specially designed for switching non-phase synchronized AC power sources. The intelligent circuitry in a T2235 Series eATS ePDU monitors both primary and secondary power inputs. If there is a problem with the primary power source, the eATS ePDU automatically transfers to the secondary power source. As soon as problems with the primary source are resolved, the eATS ePDU switches power back from the secondary to the primary source.The T2235 Series eATS ePDU systems are all designed to operate at an input voltage range of 100-240V (12A, 16A, or 24A). All T2235 Series eATS ePDUs are single-phase models that operate at a frequency of 50/60 Hz.