Vertiv Rpdu Monitored Outlet Level EC 16A or 20A 120V or 208V or 230V 1.9KW or 3.3K - VP6U20A3

Vertiv VP6U20A3 Outlet-Level Monitored Rack PDU

Overview

The Vertiv VP6U20A3 is a vertical-mount, outlet-level monitored rack power distribution unit rated for up to 20A and 3,600W, designed for high-density server cabinets, network closets, and edge data center deployments where circuit-level visibility isn't enough and you need to know exactly which outlets are drawing power. With a C20 input plug and a mixed C13/C19 outlet configuration, the VP6U20A3 handles both standard 1U/2U server loads and the higher-current devices — UPS bypass modules, high-wattage switches, storage arrays — that demand C19 connections. The built-in LCD display gives you a local readout without opening a browser, and dual RJ-45 ports let you integrate into redundant network management paths without a separate out-of-band adapter.

Key Features

• Outlet-Level Monitoring: Unlike basic metered PDUs that report only aggregate circuit load, the VP6U20A3 monitors at each individual outlet. This matters when you need to prove SLA compliance per device, track power consumption for chargeback billing across tenants, or catch a rogue load before it trips the breaker at 3AM.
• 20A / 3,600W Maximum Capacity: The 20A C20 input and 3,600W ceiling give meaningful headroom above the practical 80% derate (roughly 2,880W continuous), so a fully loaded 12-outlet cabinet won't leave you right at the edge of the breaker limit. Suitable for mixed compute and storage racks common in hyperconverged deployments.
• 12 AC Outlets — C13 + C19 Mix: The outlet mix covers both C14-tailed devices (most 1U servers, network gear) and C20-tailed equipment (higher-draw storage, some UPS inputs). You're not forced to carry a fistful of adapters to wire a heterogeneous rack — the outlets are already there for the load types you're most likely to deploy.
• Dual Ethernet RJ-45 Ports: Two RJ-45 ports support daisy-chaining PDUs on a shared management network segment, reducing switch port consumption in large deployments. This also simplifies cabling in high-density rows where running individual drops to every PDU is impractical.
• Protocol-Rich Management Stack: The VP6U20A3 supports SNMP v1/v2c/v3, HTTPS, SSH, RADIUS, LDAP, TACACS+, Modbus TCP, and Syslog — the full stack expected in enterprise and financial-sector environments with strict authentication and audit-logging requirements. SNMP v3 specifically provides encrypted, authenticated polling that v1/v2c cannot.
• IPv4 and IPv6 Dual-Stack: Native IPv6 support means the VP6U20A3 doesn't become a network modernization obstacle when your infrastructure team moves toward IPv6-only management VLANs. DHCP, NTP, and SMTP are also supported for automated provisioning and alerting.
• LCD Local Display: The front-panel LCD provides immediate visual confirmation of load and status without requiring network access — critical during initial commissioning or when investigating a tripped breaker in a remote colocation cage where laptop access is awkward.
• Vertical 0U Form Factor — 864mm Depth: At 51mm wide and 864mm deep, the VP6U20A3 mounts vertically in standard 0U rack side channels, preserving all 42U of usable front-of-rack space. The 66mm height dimension fits standard vertical channel brackets without clearance issues.
• 100–240V Input Range: The wide input voltage range (100–240V, 50–60Hz) means the same SKU deploys in North American 120V environments, European 230V facilities, or 208V three-phase-derived circuits without any hardware substitution — useful for global rollouts or mixed-voltage colocation sites.
• USB and Serial Ports for Out-of-Band Access: One USB port and one serial port provide out-of-band management and environmental sensor attachment options. Serial console access is the last-resort path when network connectivity to the PDU is lost — having it built in is the difference between a remote fix and a truck roll.

Integration and Compatibility

The VP6U20A3's Modbus TCP support integrates with Building Management Systems (BMS) and DCIM platforms that use Modbus as a native protocol — common in facilities-layer tools from vendors like Schneider, Siemens, and Johnson Controls. SNMP v3 integration is compatible with standard NMS platforms including SolarWinds, PRTG, and Nagios-derived stacks. RADIUS and TACACS+ authentication allows the PDU to participate in existing AAA infrastructure without maintaining a separate local credential store, which matters for SOC-2 and ISO 27001 compliance environments where shared passwords on infrastructure devices are a finding. LDAP integration supports directory-based user provisioning.

Frequently Asked Questions

Q: What input plug type does the VP6U20A3 use, and what circuit does it require?

A: The VP6U20A3 uses a C20 coupler input plug, which mates with a C19 receptacle on a PDU, UPS output, or in-rack power strip. It requires a 20A circuit — in North American facilities that typically means a NEMA L6-20R or a dedicated 20A branch from a UPS. The unit supports 100–240V input across 50–60Hz.

Q: What types of outlets does the VP6U20A3 provide?

A: The VP6U20A3 provides 12 AC outlets in a mix of C13 and C19 types. C13 outlets serve standard server and network gear with C14 power cords; C19 outlets handle higher-current devices with C20 cords, such as high-density storage arrays or certain UPS bypass connections.

Q: Does the VP6U20A3 support SNMP v3?

A: Yes. The VP6U20A3 supports SNMP v1, v2c, and v3. SNMP v3 provides encrypted, authenticated polling — required in environments where unencrypted v1/v2c traffic violates security policy or audit requirements.

Q: Can the VP6U20A3 be integrated with RADIUS or TACACS+ for authentication?

A: Yes. Both RADIUS and TACACS+ are supported, along with LDAP. This allows the PDU to authenticate against existing enterprise AAA infrastructure rather than relying on local accounts.

Q: What is the maximum power rating, and what's the practical continuous load limit?

A: The VP6U20A3 is rated at 20A maximum current and 3,600W maximum power. Standard electrical practice derate continuous loads to 80% of breaker capacity — approximately 2,880W or 16A continuous — to avoid nuisance tripping.

Q: Does the VP6U20A3 support daisy-chaining for shared network management?

A: Yes. Dual RJ-45 Ethernet ports support daisy-chaining multiple PDUs on a shared management network segment, reducing the number of switch ports required for PDU management in high-density row deployments.

James Everett

When I look at the VP6U20A3, the spec that immediately defines its deployment scope is the combination of outlet-level monitoring with a 20A/3,600W input rating and a mixed C13/C19 outlet bank. That trio tells you this unit is aimed at mid-density racks where you need per-device power accountability — not just a circuit breaker telling you something tripped.

Technical Highlights:

• SNMP v3 + TACACS+ + RADIUS: Three enterprise AAA protocols on a PDU is not standard — this means the VP6U20A3 can participate in your existing authentication infrastructure, satisfying audit requirements that flag shared local credentials as a security finding. No separate credential management silo.
• Dual RJ-45 with Daisy-Chain: Two Ethernet ports let you string multiple PDUs off a single switch port in a row deployment. In a 10-cabinet row with two PDUs each, that's potentially 18 switch ports you don't need to provision — meaningful in a colo where every port has a recurring cost.
• Modbus TCP: Beyond SNMP, Modbus TCP is the protocol your BMS or DCIM platform most likely speaks natively. Having it built in means power data flows into facilities-layer dashboards without a protocol gateway sitting in between and adding a failure point.

Deployment Considerations:

• The C20 input requires a C19 receptacle at the source — verify your UPS output or in-row PDU tap has C19 capacity before racking. C20-to-NEMA adapters introduce a connection reliability variable you want to avoid in production.
• At 864mm depth and vertical-mount orientation, confirm your cabinet's 0U channel depth before ordering. Shallow-depth open-frame racks (600mm depth variants) will not accommodate this unit without bracket modification.

The VP6U20A3 is the right call for colocation deployments, financial-sector server rooms, and edge data center builds where per-outlet metering feeds chargeback reporting or compliance documentation — and where SNMP v3 encryption and TACACS+ authentication are non-negotiable requirements rather than nice-to-haves.