APC Symmetra RM 4kVA Scalable to 6kVA N+1 208/240V w/208 to 120V Step-Down Transformer

The 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. With a scalable capacity from 4 kVA up to 6 kVA in an N+1 configuration, you can grow your power protection in lockstep with your business, without sacrificing single-point- of-failure protection or service continuity. The Symmetra RM’s integrated 208-to-120V step-down transformer further extends versatility, allowing 120V IT devices to be powered directly from a 208/240V supply, simplifying wiring and reducing distribution costs. This UPS is optimized for online, double-conversion protection, ensuring a clean, regulated output even during significant input disturbances, brownouts, or outages. In short, it’s a future-proof power shield for servers, storage, networking gear, and critical loads that demand consistent performance and minimal downtime.

• Redundant, scalable power protection: The Symmetra RM is built around an N+1 scalable architecture with redundant power modules, enabling maintenance without interrupting critical loads and allowing capacity to grow from 4 kVA to 6 kVA as your infrastructure expands.
• Online double-conversion assurance: True online, double-conversion UPS topology delivers continuous, clean sine-wave power with excellent voltage regulation, fast transient response, and minimal harmonic distortion for sensitive IT hardware.
• 208/240V input with 208–120V transformation: Designed for facilities with 208/240V mains, the integrated transformer step-down supports 120V IT equipment, reducing wiring complexity and improving compatibility across mixed IT environments.
• Single-phase reliability, modular rack design: The RM rack-mountable profile combines modular hot-swappable components with a compact footprint, ideal for dense data centers, telecom rooms, and edge installations where space and uptime matter.
• Strategic value for uptime and cost efficiency: High availability, reduced maintenance downtime, and scalable protection translate into lower total cost of ownership while preserving service-level commitments for applications, virtualization platforms, and database workloads.

Technical Details of APC Symmetra RM 4kVA Scalable to 6kVA N+1 208/240V w/208 to 120V Step-Down Transformer

• Power capacity: 4 kVA base, scalable to 6 kVA with N+1 redundancy
• Redundancy architecture: N+1 scalable design for high availability
• Input voltage: 208/240V
• Output features: 208V output with integrated 208-to-120V step-down transformer
• Topology: Online double-conversion single-phase UPS
• Form factor: Rack-mount (Symmetra RM) configuration for data centers, server rooms, and network closets
• Efficiency and regulation: Precise voltage regulation, low output impedance, and stable, clean sine-wave output
• Management and monitoring: Compatible with standard APC management tools and remote monitoring options for proactive maintenance

How to Install APC Symmetra RM 4kVA Scalable to 6kVA N+1 208/240V w/208 to 120V Step-Down Transformer

• Plan the installation: Identify a cool, well-ventilated rack space with adequate clearance for airflow, maintenance access, and cable management. Verify room temperature, humidity, and clearance standards per data-center guidelines before unpacking.
• Prepare the rack: Install the appropriate 19-inch rack rails and mounting hardware for the Symmetra RM chassis. Ensure the rack is level and securely anchored to support the UPS weight and distribution loads.
• Mount the UPS modules: Place the Symmetra RM chassis into the rack, inserting hot-swappable modules as required. If you are starting with 4 kVA, configure the base unit in accordance with the manufacturer’s guidelines; plan for future expansion by leaving room for additional modules.
• Connect input power: Run a dedicated, properly grounded 208/240V feed to the UPS input. Use appropriate breakers, cable gauges, and protection per local electrical codes. Confirm that the input configuration matches the unit’s specifications and that there is a reliable ground connection.
• Attach the 208-to-120V transformer: If your IT equipment requires 120V, connect the integrated step-down transformer as specified by APC’s installation manual. Ensure wiring polarity and overload protection are correctly implemented to support mixed voltages without compromising protection.
• Connect outputs to load distribution: Route the UPS output to your rack PDUs or distribution panels. Use swept, organized cabling to minimize heat buildup and maximize airflow. Label cables clearly to simplify future maintenance.
• Network and management setup: Install any optional management cards or monitoring accessories. Connect to your network or management server via USB, local serial, or SNMP as supported. Configure alert thresholds, battery test schedules, and shutdown policies according to your IT environment.
• Commissioning and testing: Power up the system and perform a self-test. Validate that the input and output voltages stay within specification, and confirm that the transformer correctly delivers 120V to 120V-load equipment. Simulate a power disturbance to verify seamless switchover and the effectiveness of the online protection.
• Documentation and coverage: Record serial numbers, firmware revisions, and installed options in your asset management system. Ensure that service contracts and spare parts inventories are up to date to support rapid maintenance and expansion.

Frequently asked questions

• Q: What makes the APC Symmetra RM 4kVA suitable for data centers? A: It combines redundancy, modular scalability, and online double-conversion protection in a compact rack-mount form factor, delivering high availability for critical IT workloads and simplifying expansion as your data center grows.
• Q: How does the N+1 configuration benefit uptime? A: N+1 means there is one additional, redundant component (power module) beyond the necessary baseline, allowing maintenance or failure of a single module without impacting overall protection or uptime.
• Q: What is the benefit of the 208 to 120V transformer? A: It enables 120V IT devices to be powered directly from a 208/240V supply, reducing distribution wiring complexity and providing flexible compatibility for mixed equipment environments.
• Q: Can I expand the system without downtime? A: Yes. The Symmetra RM is designed for hot-swappable modules and online redundancy, enabling capacity expansion and maintenance without interrupting protected loads.
• Q: What kinds of equipment should use this UPS? A: Critical servers, virtualization hosts, storage arrays, databases, and network infrastructure that require stable, clean power and minimal downtime.
• Is there management software available for monitoring? A: Yes. APC’s management tools and standard monitoring interfaces provide remote visibility, alerting, and control over UPS status, battery health, and event logs.