Vertiv VA6U11A0 Monitored Rack PDU with Outlet-Level Transfer Switch

Overview

The Vertiv VA6U11A0 is a 0U horizontal rack PDU designed for data center and IT closet deployments where per-outlet power visibility and reliable power transfer matter. Six C13 outlets fed through a C14 input plug give you a clean, cable-managed power chain for 1U rack equipment — servers, switches, storage nodes, or edge appliances — at 100–120V single-phase. The VA6U11A0 sits in the monitored outlet-level tier of Vertiv's rack PDU lineup, meaning you get real-time current, voltage, and power readings at the device level, not just at the branch circuit, which is the difference between knowing a rack is drawing 8A and knowing exactly which outlet is pulling 3A of that load.

The built-in LCD display puts live readings on the front panel without requiring a network connection — useful during initial commissioning or when you need a quick sanity check without pulling up a browser. The 3-meter input cable gives enough reach in most standard cabinet configurations without forcing you to route a longer whip.

Key Features

• Outlet-Level Monitoring (Current, Voltage, Power): Unlike branch-only PDUs that give you one number for the whole unit, the VA6U11A0 meters each of its six C13 outlets individually. That granularity lets you load-balance across circuits, catch rogue draw before it becomes a tripped breaker, and produce accurate per-server power reports for capacity planning or chargeback.
• 6 × C13 Outlets with C14 Input: The C14-to-C13 configuration is the standard power chain for 1U rack servers and networking gear with IEC power supplies. No adapters needed; just plug directly into your UPS or PDU branch circuit with a standard C13-C14 cord.
• LCD Display: Live readings are visible on the unit itself, independent of network state. During a network outage or initial rack build-out, you can confirm load and voltage at the unit without remote access — a small but real operational advantage when you're standing in a hot aisle.
• SNMP v1/v2c/v3 + Modbus TCP: SNMP v3 with authentication and encryption is the minimum acceptable protocol for any monitored PDU going into a managed network environment. The Modbus TCP support opens integration with BMS and DCIM platforms that don't speak SNMP natively — useful in co-location or industrial-adjacent deployments.
• Full Protocol Stack — HTTPS, SSH, LDAP, RADIUS, TACACS+: The VA6U11A0 supports encrypted management over HTTPS and SSH, with LDAP, RADIUS, and TACACS+ for centralized authentication. That means you can integrate PDU access into your existing AAA infrastructure rather than managing local credentials on every unit — critical for environments with SOC2 or ISO 27001 obligations.
• IPv4 + IPv6 Dual-Stack with DHCP and NTP: Native IPv6 support future-proofs the unit for networks that have already transitioned or are in the process. NTP sync keeps event logs and SNMP traps time-accurate, which matters when you're correlating PDU alerts against UPS events or server logs in a SIEM.
• Syslog + SMTP Alerting: Forward events to your syslog aggregator or trigger email alerts directly from the unit. Combined with SNMP traps, you have three parallel channels to catch threshold breaches — overcurrent, under-voltage, or outlet state changes — before they cascade into downtime.
• RJ-45 Ethernet + USB + Serial Ports: One RJ-45 for network management, one USB port for local configuration or firmware updates, and one serial port for out-of-band console access. The serial port is the fallback when network access is unavailable — a necessity in any hardened management architecture.
• 100–120V Single-Phase, 50/60 Hz: Rated for North American standard branch circuits. The 10A/15A input rating (per the product line designation) fits standard NEMA 5-15 or C14-to-C14 circuits — confirm your branch amperage against your UPS or PDU upstream before ordering to avoid nuisance trips at high load.
• 0U Horizontal Mounting: Zero-U horizontal form factor mounts in a standard rack without consuming a rack unit, preserving your 1U slots for revenue-generating gear. The 3-meter cable provides enough slack for most rear-panel routing scenarios in 42U or 48U cabinets.
• Black Powder-Coat Finish: Matches standard black rack infrastructure; no aesthetic mismatch in open-frame or glass-door cabinets where the PDU is visible.

Integration & Compatibility

The VA6U11A0 integrates with any DCIM or BMS platform that supports SNMP (v1/v2c/v3) or Modbus TCP — including Vertiv's own management tools as well as third-party platforms. LDAP integration works with Microsoft Active Directory and OpenLDAP. RADIUS and TACACS+ compatibility covers most enterprise AAA deployments including Cisco ISE and FreeRADIUS. The C14 input connects directly to any rack power distribution or UPS with a C13 output port, which covers the majority of data center UPS units in the field. For mixed-protocol environments, the simultaneous SNMP + Modbus TCP support means you don't need a protocol translator between your IT monitoring stack and your facilities BMS. Review your rack and cabinet configuration to confirm zero-U horizontal mounting clearance — some high-density cable management panels can obstruct horizontal PDU installation along the rear rail.

If your deployment requires network switch integration for automated outlet control or sequenced power cycling, confirm whether you need a switched PDU variant rather than a monitored-only model — the VA6U11A0 provides visibility and metering but check the product specifications for outlet switching capability in this model tier.

Frequently Asked Questions

Q: What is the input plug type on the VA6U11A0, and what circuit does it require?

A: The VA6U11A0 uses a C14 coupler input, which mates with a standard C13-to-C14 power cord. It is rated for 100–120V single-phase at 50/60 Hz. Verify your upstream branch circuit amperage against the 10A or 15A rating of your specific unit before commissioning.

Q: Does the VA6U11A0 support SNMP v3?

A: Yes. The VA6U11A0 supports SNMP v1, v2c, and v3, along with HTTPS, SSH, Syslog, SMTP, LDAP, RADIUS, TACACS+, NTP, DHCP, IPv4, IPv6, and Modbus TCP — a full enterprise protocol stack for both IT and facilities management integration.

Q: What type of outlets does the VA6U11A0 provide?

A: The VA6U11A0 provides six C13 coupler outlets, the standard IEC connector for 1U rack servers, switches, and storage equipment with IEC power supplies.

Q: Can I monitor power at the individual outlet level on the VA6U11A0?

A: Yes. The VA6U11A0 provides outlet-level monitoring of current, voltage, and power — not just aggregate branch-level readings. This allows per-device load tracking, capacity planning, and chargeback reporting at the individual outlet.

Q: How is the VA6U11A0 mounted in a rack?

A: The VA6U11A0 is a 0U horizontal-mount PDU. It installs in a standard rack without consuming a rack unit (1U slot), typically along the rear vertical rail. The input cable is 3 meters in length.

Q: Does the VA6U11A0 support centralized user authentication?

A: Yes. The unit supports LDAP, RADIUS, and TACACS+ for centralized authentication, allowing integration with Active Directory, Cisco ISE, FreeRADIUS, and similar AAA platforms without managing local credentials on each PDU.

Marty Allison

The VA6U11A0 is one of those PDUs I recommend when a team has been burned by branch-level-only metering and needs to know precisely which outlets are pulling load — not just that the whole PDU is at 80% capacity. The outlet-level current, voltage, and power monitoring on the VA6U11A0 gives you the granularity to catch a misbehaving server PSU before it trips the breaker, and to actually produce defensible per-device power numbers for capacity or chargeback reporting.

Technical Highlights:

• SNMP v3 + Modbus TCP Dual Protocol: SNMP v3 handles your IT monitoring stack with authentication and encryption; Modbus TCP handles your BMS or DCIM platform. Running both simultaneously means no protocol gateway appliance between your IT and facilities teams — a meaningful simplification in co-lo or hybrid environments.
• LDAP / RADIUS / TACACS+ Authentication: Centralizing PDU auth into your existing AAA infrastructure (AD, ISE, FreeRADIUS) eliminates the PDU-by-PDU credential sprawl that shows up in every data center audit. For a 20-PDU deployment this is not optional — it's the difference between a 20-minute audit response and a 2-day credential archaeology project.
• 6 × C13 Outlets on a C14 Input: Standard IEC chain, no adapters, no special cords. Six outlets cover a half-rack of 1U gear or a smaller edge cabinet entirely. The 3-meter cable handles most rear-panel routing scenarios without extension cords.

Deployment Considerations:

• The 100–120V input rating makes the VA6U11A0 a North American deployment unit. If your data center is 208V or 240V, this is not the correct model — Vertiv offers higher-voltage variants in the same monitored PDU family.
• Confirm whether you need outlet switching (remote on/off per outlet) in addition to monitoring. The VA6U11A0 is in the monitored tier; if you need to remotely cycle a locked-up server PSU without physical access, verify the switched capability in the product specifications before ordering.

For a 5–15 server edge rack, a branch office IT closet, or a co-location cage where you're paying for power by the kilowatt-hour and need to prove it, the VA6U11A0 is a practical fit — especially when your management stack already speaks SNMP v3 or Modbus TCP.