APC Smart-UPS SRT Step-Down Transformer, 10kVA, Rackmount 4U with 2x NEMA L5-20R & 2x NEMA L14-30R Outlets

Power reliability matters in data centers, server rooms, and critical IT deployments. The APC Smart-UPS SRT Step-Down Transformer is a purpose-built accessory designed to complement your Smart-UPS by delivering precise voltage regulation and flexible power distribution in environments where higher-voltage feeds (208V or 240V) must support standard 120V equipment. With a robust 10kVA capacity, a compact 4U rack footprint, and a thoughtful outlet configuration, this transformer helps you protect sensitive devices, improve runtime efficiency, and maintain optimal performance across racks. Built to integrate seamlessly with APC’s power protection ecosystem, it’s an indispensable solution for tailoring your UPS system to meet evolving load requirements without compromising reliability or manageability.

• Power capacity and compatibility: This 10 kVA step-down transformer is engineered to convert higher-voltage feeds to safe, standard 120V for IT gear, enabling you to run 120V devices directly from 208V or 240V distributions. It complements APC Smart-UPS systems to create a cohesive, scalable protection strategy for servers, storage, and network infrastructure. By matching load needs to precise voltage levels, it helps maximize uptime and energy efficiency while reducing the risk of equipment damage due to voltage irregularities.
• Flexible outlet configuration for diverse racks: The unit provides two NEMA L5-20R outlets (125V, 20A) for common IT peripherals and two NEMA L14-30R outlets (125/250V, 30A) to support higher-demand devices or feed multiple devices across a rack. This dual-outlet arrangement enables clean cable management and centralized power distribution, simplifying staging and maintenance in data centers or edge deployments.
• Rack-mount design for efficient space utilization: Engineered as a compact 4U, 19-inch rack-mount accessory, this transformer fits neatly into standard server racks without requiring additional floor space. Its sturdy enclosure and modular form factor support organized cabling, easier airflow management, and straightforward retrofits alongside existing UPS, PDUs, and IT hardware.
• Voltage regulation and protection you can trust: By regulating incoming voltage and isolating sensitive equipment from surges and dips, the step-down transformer helps preserve uninterrupted operation and device longevity. When paired with Smart-UPS protection, it enhances overall power conditioning, reduces nuisance outages, and contributes to stable performance for critical workloads such as virtualization, databases, and collaboration platforms.
• Ease of deployment and ongoing serviceability: Designed as a practical accessory for Smart-UPS systems, this transformer offers straightforward installation and routine maintenance. Its modular, rack-friendly form factor means you can add or relocate it as load profiles evolve, keeping your data center or edge environment agile while preserving centralized power governance and monitoring capabilities.

Technical Details of APC Smart-UPS SRT Step-Down Transformer, 10kVA, rackmount, 4U, 2x NEMA L5-20R & 2x NEMA L14-30R outlets

• Model: APC Smart-UPS SRT Step-Down Transformer
• Capacity: 10 kVA (step-down capability for 120V IT equipment from higher-voltage feeds)
• Form factor: Rack-mount, 4U, 19-inch enclosure for standard data center racks
• Outlets: 2x NEMA L5-20R and 2x NEMA L14-30R
• Input/Output configuration: Designed to accept 208/240V input and provide 120V output for IT loads
• Application: An accessory to tailor Smart-UPS protection and distribution in data centers, server rooms, and edge deployments

how to install APC Smart-UPS SRT Step-Down Transformer

Installing the APC Smart-UPS SRT Step-Down Transformer is a straightforward process that should be performed by qualified personnel following your organization’s safety protocols and local electrical codes. Use the following general guidance to plan a safe, efficient deployment:

• Plan the rack layout: Identify a suitable 19-inch rack location with adequate clearance for air flow, access to outlets, and maintenance space. Confirm that the rack can accommodate a 4U height transformer and that there is a clear path for connecting both input and output cables.
• Mount the transformer in the rack: Secure the 4U transformer into the designated rack space using the provided mounting hardware. Ensure the unit is level and firmly attached to prevent vibration and movement during operation or maintenance.
• Connect the input supply: Connect the transformer’s input to the appropriate higher-voltage distribution (208V or 240V) using properly rated connectors and protective devices. Adhere to utility and electrical code requirements, including grounding and bonding practices.
• Route and connect outputs: Connect the 120V loads to the two NEMA L5-20R and NEMA L14-30R outlets according to your load plan. Keep cables organized, label circuits, and avoid overloading individual outlets to maintain optimal performance and safety.
• Integrate with the Smart-UPS: Ensure compatibility with your Smart-UPS model and connect the transformer as per APC installation guidelines so that protection, monitoring, and management features remain unified within the APC ecosystem.
• Test and verify: Power up the system, verify voltage at the 120V outlets, check for proper grounding, and confirm that connected devices operate as expected. Monitor for any abnormal readings or fault indicators and perform routine inspections according to the manufacturer’s manual.

Frequently asked questions

• Q: What is the primary purpose of the APC Smart-UPS SRT Step-Down Transformer?

  A: It serves as a voltage-matching accessory that steps down higher-voltage input (208V/240V) to 120V for IT equipment, enabling reliable power protection and distribution when paired with a Smart-UPS.

• Q: How many outlets are on the transformer and what are their types?

  A: The unit provides four outlets in total: 2x NEMA L5-20R (120V, 20A) and 2x NEMA L14-30R (125/250V, 30A), offering flexible connections for different devices and loads.

• Q: What rack space does it require?

  A: The transformer occupies 4U of rack height in a standard 19-inch rack, allowing efficient use of vertical space alongside other UPS, PDUs, and IT equipment.

• Q: Is installation compatible with all Smart-UPS models?

  A: The transformer is designed as an accessory to tailor many Smart-UPS configurations. Always consult the specific Smart-UPS compatibility guide and installation documentation for your exact model and region.

• Q: Does using this transformer affect overall reliability or warranty?

  A: When installed according to APC guidelines and integrated with a supported Smart-UPS system, the transformer enhances power conditioning and distribution, while preserving warranty coverage as specified by APC for properly installed accessories.