Eaton Tripp Lite Series 3.8kW Single-Phase Monitored Automatic Transfer Switch PDU, 2 200-240V 16A L6-20P Inputs, 1 L6-20R Outlet, 1U

The PDUMNH20HVAT is a compact, hot-swappable, monitored automatic transfer switch (ATS) power distribution unit designed for data centers, server rooms, and network closets. Delivering from 3.3 to 3.8 kW of single-phase power on 208/240V, it supports redundant power for critical devices while fitting neatly into 1U of rack space in a standard 19-inch rack. This Eaton Tripp Lite series PDU provides reliable, real-time power monitoring and intelligent load management, helping IT managers optimize uptime, minimize risk, and improve overall data center efficiency.

• Robust power capacity in a compact 1U form factor – With a 3.3/3.8 kW single-phase design and dual 208/240V L6-20P inputs, this PDU balances high power delivery with space efficiency, making it ideal for dense server rows and edge deployments. The 1U rack height preserves valuable rack real estate while keeping critical equipment powered through peak loads.
• Monitored ATS functionality for enhanced uptime – The integrated automatic transfer switch continuously monitors inputs and, in the event of a supply disruption, automatically transfers to the secondary source. This capability ensures continuous power to connected devices and minimizes interruption during power events, outages, or sags.
• Redundant power for non-redundant configurations – Designed to provide redundancy for network devices that typically rely on non-redundant PSUs, the PDUMNH20HVAT enables you to create resilient power paths in mixed-PSU configurations. This means critical equipment can remain online even when one supply circuit experiences a fault or disturbance.
• Easy rack integration and 19-inch compatibility – Engineered for standard 19-inch racks, it mounts securely in a single rack unit (1U) and aligns with industry-wide mounting rails. The slim footprint makes it straightforward to deploy in both data centers and office server rooms without sacrificing accessibility to outlets and monitoring ports.
• Remote power monitoring and management – Built to provide visibility beyond basic power distribution, this PDU offers remote monitoring capabilities that let you track voltage, current, load, and power events. Integrate with DCIM, SNMP-based tools, or other monitoring systems to receive alerts, trends, and energy usage reporting for proactive capacity planning.

Technical Details of Eaton Tripp Lite Series 3.8kW Single-Phase Monitored ATS PDU

• Model: PDUMNH20HVAT
• Power rating: 3.3/3.8 kW single-phase
• Input voltage: 208/240V (single-phase)
• Inputs: 2 × L6-20P, 16A each (dual input for redundancy)
• Output: 1 × L6-20R outlet
• Rack space: 1U (EIA 19-inch rack standard)
• Mounting: 19-inch rack, front-accessible outlets
• Monitoring: Remote, monitored power distribution with alerts and load visibility

How to install Eaton Tripp Lite PDUMNH20HVAT

Installing the PDUMNH20HVAT is straightforward for professionals familiar with electrical safety and rack-mounted equipment. Follow these steps to ensure a safe, reliable deployment that maximizes uptime and makes the most of its monitored ATS features.

1) Prepare the rack and workspace. Ensure the installation area is clean, dry, and meets electrical code requirements. Confirm that your rack can support the weight and dimensions of the PDU and that you have access to two independent 208/240V circuits that can supply up to 16A each.

2) Mount the PDU in the rack. Align the PDUMNH20HVAT with the front of the rack and slide it into a 1U space. Secure the unit using the appropriate screws or mounting hardware provided by the manufacturer. Verify that the unit sits level and that the L6-20P inputs and L6-20R outlet are accessible for cable routing.

3) Connect power inputs. Attach two independent 208/240V power sources to the two L6-20P inputs. Ensure each circuit is configured for up to 16A and that wiring adheres to local electrical codes and safety standards. If a true redundant setup is required, ensure both inputs originate from separate, non-shared power feeds to maximize resilience.

4) Connect the output to your equipment. Plug your critical devices into the single L6-20R outlet. If you need additional devices, plan a safe, controlled distribution strategy that does not exceed the PDU’s total rated load. Check the combined load of connected devices to prevent overloading the unit during peak demand or failover events.

5) Configure monitoring and alerts. If the PDU includes remote monitoring capabilities, connect it to your management network or DCIM system according to the user manual. Configure alert thresholds for voltage fluctuation, current draw, and load percentage to receive timely notifications during power disturbances. Test the monitoring integration to confirm that alerts are delivered correctly.

6) Test transfer and validation. With both power sources active, simulate a loss on one input to verify the automatic transfer switch operates as intended. Observe that connected equipment remains powered and that monitoring reports reflect the transfer event. Document this test for future audits and capacity planning.

7) Final checks and safety. Ensure all cables are neatly routed, labeled, and not pinching any airflow. Confirm that there is no excessive heat buildup around the unit and that the rack doors can close without obstruction. Review manufacturer safety instructions and local electrical codes to validate compliance before putting the system into full operation.

Frequently asked questions

• What is the PDUMNH20HVAT and what does it do? The PDUMNH20HVAT is a monitored, single-phase automated transfer switch (ATS) power distribution unit designed to deliver 3.3/3.8 kW of power from 208/240V sources into a single L6-20R outlet. It supports redundancy through dual L6-20P inputs and provides remote monitoring capabilities to help maintain uptime in data centers and server rooms.
• How many inputs and outputs does it have? It features two 208/240V L6-20P input connections (16A each) and a single L6-20R output receptacle. This configuration supports dual power feeds for improved resilience while supplying a single outlet for connected equipment.
• What space does it occupy in a rack? It occupies 1U of vertical rack space in a standard 19-inch rack, preserving valuable rack real estate for high-density deployments while keeping essential power distribution close to the equipment.
• Can it provide redundant power to devices with non-redundant PSUs? Yes. The dual-input design and ATS capability enable redundant power paths for devices that might otherwise rely on a single supply, helping to maintain uptime during circuit interruptions or disturbances.
• Is remote monitoring available, and how do I manage alerts? The PDU includes remote power monitoring features that allow integration with compatible DCIM or SNMP-based management systems. You can configure alerts for voltage, current, and load to receive timely notifications about power events and plan capacity accordingly.
• How do I install and test this PDU? Installation involves mounting the unit in a 1U rack, connecting two 208/240V feeds to the dual L6-20P inputs, wiring your devices to the L6-20R outlet, and configuring any monitoring interfaces. After installation, perform a transfer test by simulating a loss on one input to confirm automatic failover and verify monitoring accuracy.
• What environments is this PDU suited for? This PDU is ideal for data centers, server rooms, network closets, and edge deployments where reliable power and visibility into power usage are critical for uptime and performance.