Emerson Network Power, a business of Emerson and a global leader in maximizing availability, capacity and efficiency of critical infrastructure, today introduced the Liebert NXL™ 1100kVA/1100kW UPS to offer medium to large data centers a level of operating efficiency previously available only in transformer-free systems, but with the safety, fault tolerance, and reliability demonstrated by transformer-based systems. The Liebert NXL UPS is UL and CSA listed and is available globally for 60 Hz applications—480, 575 or 600VAC.