APC Symmetra RM 6kVA: Scalable N+1 Online UPS with 208/240V Input and 208→120V Transformer

Experience enterprise-grade power protection with the APC Symmetra RM 6kVA, a highly available single-phase UPS designed for data centers, server rooms, and mission-critical IT environments. This model delivers redundant and scalable double-conversion online protection, ensuring continuous uptime for your most important equipment. With an integrated 208/240V input and a built-in 208 to 120V step-down transformer, it provides ready-to-use 120V outlets for standard IT devices while minimizing energy waste and preserving power quality. Ideal for environments where uptime is non-negotiable, the Symmetra RM combines reliability, expandability, and ease of management in a compact, rack-mountable footprint.

• High availability: Redundant N+1 architecture supports uninterrupted operation during maintenance or module failure, dramatically reducing the risk of downtime for critical workloads.
• Scalable protection: A modular, future-proof design lets you add capacity or redundancy incrementally without replacing existing hardware, protecting your investment as IT demands evolve.
• Clean, reliable power: Double-conversion online topology delivers a pristine, 100% conditioned sine wave output with tight voltage regulation, excellent transient response, and consistent power delivery to sensitive servers, storage, and networking gear.
• 208/240V input with 120V output: Built-in transformer steps down from 208/240V to 120V, enabling safe, standard 120V connections for four L5-20R outlets in your rack while maintaining full protection for connected equipment.
• Rack-ready and manageable: A robust 19-inch rack-mountable chassis with streamlined management options, enabling proactive monitoring, alerting, and seamless integration into existing data center management workflows.

Technical Details of APC Symmetra RM 6kVA

• Power rating: 6 kVA (scalable with N+1 redundancy for high availability)
• Input voltage: 208/240 VAC
• Output voltage: 120 VAC via built-in 208→120V step-down transformer
• Outlet configuration: 4 x L5-20R receptacles for 120V devices
• Topology: Redundant double-conversion online UPS providing continuous, conditioned power
• Form factor: Rack-mountable 19-inch enclosure suitable for data centers and IT rooms
• Management: Supports remote monitoring and management through standard interfaces, enabling integration with broader data center infrastructure management (DCIM) systems

How to Install APC Symmetra RM 6kVA

• Plan your rack space and power path: Verify the availability of a stable 208/240V feed, ensure adequate clearance for cooling, and determine placement for redundancy and hot-swappable modules if you are deploying in an N+1 configuration.
• Prepare the rack: Use appropriate mounting rails and hardware for a secure, vibration-free installation in a standard 19-inch rack; verify grounding requirements per local electrical codes.
• Mount the unit: Slide the Symmetra RM into the rack, secure with the provided hardware, and double-check that airflow is unobstructed for optimal cooling performance.
• Connect input power: Attach the UPS input cables to the 208/240V power source using correctly rated connectors and conductors; ensure grounding and adherence to safety standards to protect personnel and equipment.
• Connect loads to the 120V outlets: Plug critical devices into the four L5-20R outlets, keeping high-load servers on dedicated circuits when possible to balance the load across the system.
• Configure management and monitoring: Connect the UPS to your network or local console, enable monitoring features, set notification thresholds, and configure redundancy preferences if applicable. Define runtime expectations and alerting rules to align with your service levels.
• Perform a start-up test: Power on the unit, run an initial self-test, verify that the output waveform is clean, confirm load coverage, and inspect for any fault indicators or abnormal readings before placing the system into production.

Frequently asked questions

• Q: What does scalable to 6 kVA N+1 mean? A: It means the Symmetra RM supports adding modules to reach up to 6 kVA of protected capacity while maintaining redundancy. In an N+1 configuration, a spare module ensures continuous protection and uptime even during maintenance or a single component failure.
• Q: How many outlets are provided, and what type are they? A: The unit includes four L5-20R receptacles, delivering 120V to critical devices sourced through the built-in 208/240V input transformer.
• Q: Can I use this UPS in a mixed-voltage environment? A: Yes. The Symmetra RM accepts 208/240V input and provides 120V output through the internal step-down transformer, making it suitable for equipment that requires 120V while powered from a higher-voltage supply.
• Q: Is this UPS appropriate for data centers or enterprise IT rooms? A: Absolutely. The Symmetra RM is designed for high-availability IT environments, offering double-conversion online protection, scalability for growing loads, and centralized management capabilities to support mission-critical infrastructure.
• Q: How is the system managed and monitored? A: Management is supported through standard interfaces and can be extended with optional management cards or network-enabled solutions. This enables real-time monitoring of voltage, load, runtime, and alerting, with integration into existing DCIM workflows for proactive maintenance.