The APC NetShelter Rack Automatic Transfer Switch (ATS) AP4452A is the Fifth-Generation range of high availability switches offering greater control of your IT equipment from Cloud to Edge. With Industry leading reliability, agility, and manageability the APC NetShelter Rack ATS provides redundant power to single-corded equipment loads in the IT rack. AP4452A is a single phase 1U Rack ATS with 20A rated current, 120V rated voltage and 1920VA load capacity. For the North America region, the Regulatory Derated Input Current is 16A.