APC Symmetra RM 4kVA Scalable to 6kVA N+1 208/240V w/208 to 120V Step-Down TransformerThe APC Symmetra RM 4kVA is engineered for enterprise grade reliability, delivering highly available, uninterrupted power to mission critical IT equipment. This single phase, modular UPS combines redundancy, scalability, and precision power protection in a compact rack mount form factor. It is designed for data centers, server rooms, virtualization clusters, and network infrastructures where uptime is non negotiable and expansion needs are continual.