Vertiv Rpdu Monitored Outlet Level EC 30A 120/208V WYE 8.6KW Horizontal (12) Comb - VP6N31A2

Vertiv VP6N31A2 Monitored Outlet-Level Rack PDU — 30A, 3-Phase, 8.6kW, 12-Outlet Horizontal

Overview

The Vertiv VP6N31A2 is a horizontally mounted, three-phase monitored rack PDU rated at 30A / 8.6kW on a 120/208V WYE configuration. It ships with a NEMA L21-30P input plug on a 3-meter cord and delivers power through twelve outlets — a mix of C13 and C19 couplers — making it a practical fit for mid-density compute rows where servers, storage arrays, and networking gear share the same rack column. Monitoring is at the current, power, and voltage level per outlet, so you get the granularity needed to track load distribution across the PDU without guessing which device is pulling what.

This is not a basic metered unit where you only see total draw. The VP6N31A2 gives you outlet-level visibility, which matters when you're troubleshooting an overload alarm at 2 a.m. or trying to balance load across two PDU legs before provisioning another server. The rack PDU mounts horizontally in 0U rack space, preserving your full 42U or 45U for equipment — no rack-unit tax for power management.

Key Features

• Outlet-Level Current, Power, and Voltage Monitoring: Each of the 12 outlets reports amperage, watts, and volts independently. In a high-density row, that means you can identify which individual device is responsible for a load spike — not just the PDU aggregate. Saves diagnostic time and prevents unnecessary capacity upgrades when the real fix is redistributing load.
• 30A / 8.6kW Three-Phase Input (NEMA L21-30P): The L21-30P plug connects to standard three-phase 120/208V WYE branch circuits commonly found in purpose-built data center and colocation environments. At 8.6kW usable capacity, this PDU can handle a half-populated server rack without approaching derating thresholds — giving you headroom to grow before you need a second PDU.
• 12 Outlets — C13 and C19 Mix: C13 handles standard 1U/2U server power supplies (under 10A loads); C19 accommodates high-draw devices like dual-PSU storage arrays and high-core-count compute nodes that ship with C20 plugs. Having both outlet types on the same PDU eliminates the need for C19-to-C13 adapters that introduce another failure point in the power chain.
• 3-Meter Input Cord: The 3m (approximately 10 ft) cord gives you enough slack to reach overhead busway drops or PDU whips without strain-loading the connector — useful in hot-aisle/cold-aisle layouts where the power drop may not land directly at the rack.
• LED Display and Indicators: The onboard LED display provides local readout of monitoring data without requiring a laptop or network connection. Useful during initial commissioning or when network access is unavailable. LED indicators give at-a-glance status on power state and alarm conditions.
• Dual-Stack IPv4/IPv6 Networking via RJ-45: The single Ethernet port supports both IPv4 and IPv6, meaning the PDU integrates into modern dual-stack data center networks without requiring a dedicated management VLAN on legacy addressing. The RJ-45 port pairs with an RS-232 serial port (DB9 or RJ-style, 1 port) for out-of-band console access during network outages.
• USB Port for Local Management: The onboard USB port supports local firmware updates and configuration without requiring network access — important in air-gapped or strict-change-control environments where pushing firmware over the network requires a change ticket.
• 50/60 Hz Input Frequency Compatibility: Accepts both 50 Hz and 60 Hz input, making the VP6N31A2 deployable in North American (60 Hz) and international (50 Hz) facilities without ordering a region-specific SKU. Relevant for global colocation providers managing a single PDU SKU across multiple sites.

Integration and Compatibility

The VP6N31A2 supports an extensive protocol stack suited to enterprise DCIM and network management environments: SNMP v1, v2c, and v3 for integration with DCIM platforms, NMS tools, and custom monitoring stacks; HTTPS and SSH for encrypted management sessions; RADIUS and TACACS+ for centralized AAA authentication against existing enterprise identity infrastructure; LDAP for directory-based user management; NTP for time synchronization aligned with syslog timestamps; RSTP for network redundancy on the management port; Syslog for event forwarding to SIEM or log aggregation systems; and Modbus TCP for integration with BMS (building management systems) and industrial control environments.

The combination of RADIUS, TACACS+, and LDAP support means access control for the PDU can be tied to Active Directory or RADIUS infrastructure without managing local credentials per device — a meaningful operational simplification when you're managing dozens of PDUs across a data center floor. SNMP v3 with authentication and encryption satisfies security audits that flag v1/v2c as non-compliant in regulated environments. Modbus TCP extends compatibility to facilities management systems commonly used in colocation and enterprise data centers, enabling power data to feed floor-level capacity planning dashboards alongside HVAC and cooling telemetry.

For physical integration: the horizontal 0U form factor fits standard rack enclosures and pairs naturally with Vertiv's broader cabinet and cooling ecosystem. The NEMA L21-30P plug requires a compatible three-phase 30A branch circuit — verify your panel and PDU whip termination before deployment. If your environment uses single-phase branch circuits, this is not the correct PDU; consider a single-phase variant in the Vertiv Geist V-Series line instead.

For teams evaluating rack power infrastructure, the rack PDU selection guide covers phase configuration tradeoffs, outlet density planning, and metering tier differences in detail.

Frequently Asked Questions

Q: What input plug does the VP6N31A2 use, and what circuit does it require?

A: The VP6N31A2 uses a NEMA L21-30P input plug on a 3-meter cord. It requires a 30A, three-phase 120/208V WYE branch circuit. Verify that your panel and PDU whip provide an L21-30 receptacle before ordering.

Q: Does the VP6N31A2 monitor at the outlet level or only the PDU total?

A: Outlet-level monitoring. The PDU reports current, power (watts), and voltage per outlet — not just the PDU aggregate. This gives you per-device load visibility without separate inline meters.

Q: What outlet types are on the VP6N31A2?

A: The PDU has 12 outlets in a combination of C13 and C19 couplers. C13 suits standard server and networking power supplies; C19 accommodates higher-draw devices with C20 plugs such as dual-PSU storage arrays.

Q: Does the VP6N31A2 support SNMP v3 and encrypted management?

A: Yes. The PDU supports SNMP v1, v2c, and v3, along with HTTPS and SSH for encrypted web and CLI management sessions. RADIUS, TACACS+, and LDAP are supported for centralized authentication.

Q: Can the VP6N31A2 integrate with a building management system (BMS)?

A: Yes. Modbus TCP is supported, which is the standard protocol for BMS and SCADA integration in data center and industrial facilities environments.

Q: Does the VP6N31A2 work in 50 Hz environments outside North America?

A: The PDU accepts 50/60 Hz input and operates on 100–120V / 200–240V, making it usable in international facilities. However, verify local outlet standards — the NEMA L21-30P plug is North American; international deployments may require an appropriate whip or receptacle.

Ted Perry

The VP6N31A2 is the PDU I'd spec for a mid-density three-phase rack deployment where you need outlet-level load visibility without stepping up to a full per-outlet switched unit. The Modbus TCP support is what often decides this for me in colocation builds — most facility BMS platforms speak Modbus natively, and having the PDU feed directly into the floor capacity dashboard without a protocol bridge saves integration hours during commissioning.

Technical Highlights:

• Outlet-Level Current/Power/Voltage: Per-outlet metering on all 12 outlets means you can trend load by individual device over time — not just react to aggregate alarms. That's the difference between proactive capacity management and firefighting.
• SNMP v1/v2c/v3 + RADIUS/TACACS+/LDAP: Full AAA stack means PDU authentication can be federated to your existing Active Directory or RADIUS infrastructure — no separate local credential management per device when you're running 40+ PDUs on a data center floor.
• Modbus TCP: Rarely included at this price tier on monitored (non-switched) PDUs. Directly enables BMS integration for colocation power capacity reporting without a protocol converter in the loop.

Deployment Considerations:

• The NEMA L21-30P plug requires a three-phase 30A WYE branch circuit. If your existing panels terminate to single-phase L6-30 or L5-30, this PDU is not compatible — confirm your distribution panel's output before purchase.
• With 12 outlets across three phases (WYE), plan your outlet-to-phase load balancing during initial provisioning. Unbalanced loading across phases will reduce effective capacity below the 8.6kW nameplate — outlet-level monitoring makes it straightforward to verify balance after installation.

The VP6N31A2 fits best in colocation cages, enterprise data center rows, and managed hosting environments where three-phase distribution is already in place and the operations team needs per-device power telemetry feeding into a DCIM or BMS platform without a switched PDU's per-outlet relay overhead.