Vertiv VP7N31A3 Switched Outlet-Level Monitoring PDU, 30A 208V 3-Phase, 8.6kW Horizontal Rack
Overview
The Vertiv VP7N31A3 is a horizontal, three-phase switched rack PDU rated at 30A / 208V delta with 8.6kW of usable capacity — the right choice for dense compute rows where you need granular, per-outlet power control and real-time monitoring without relying on a separate out-of-band management appliance. Twelve managed outlets (C13 and C19) cover everything from 1U edge servers to high-draw GPU nodes, and the onboard LCD gives local ops teams an at-a-glance read on current, voltage, and power without pulling up a browser. The VP7N31A3 ships with a 3-meter NEMA L15-30P cord, which is the standard plug for 30A three-phase panels in North American data center and colocation environments.
Key Features
- Switched Outlet-Level Control (12 Outlets): Each of the 12 outlets — a mix of C13 and C19 receptacles — can be switched on, off, or power-cycled independently over the network. That means you can reboot a hung server, sequence startup to avoid inrush collisions, or cut power to a decommissioned slot without touching the cabinet. This is the spec that separates switched PDUs from monitored-only units, and it matters most in remote or lights-out facilities.
- Three-Phase 208V Delta / 8.6kW Capacity: Drawing from a three-phase NEMA L15-30P feed at 200–240V input, the VP7N31A3 distributes up to 8.6kW across its outlet bank. Three-phase distribution at the PDU level balances load across phases at the panel, which reduces neutral current and helps even out breaker loading in high-density rows.
- Per-Outlet Current, Voltage, and Power Monitoring: Real-time monitoring at the outlet level — not just aggregate input — means you can catch a runaway load, track per-server consumption for chargeback, or verify that a powered-down device is actually drawing zero watts. This level of granularity is the core operational case for outlet-level PDUs over bank-level units.
- SNMP v1/v2c/v3, Modbus TCP, and Full Protocol Stack: The VP7N31A3 supports DHCP, HTTP, HTTPS, LDAP, NTP, RADIUS, RSTP, SSH, SMTP, SNMP (all three versions), Syslog, TACACS+, and Modbus TCP. SNMPv3 with RADIUS and TACACS+ means this unit fits into enterprise AAA environments without exception processes. Modbus TCP opens integration paths to BMS and DCIM platforms that don't speak SNMP natively.
- LCD Display for Local Visibility: The onboard LCD panel surfaces current, voltage, and power readings locally — useful during commissioning, during an outage when network access is down, or when a technician is physically in the row and needs immediate confirmation of load state without logging into a management interface.
- IPv4/IPv6 Dual-Stack Networking: Native IPv6 support means this PDU integrates cleanly into modern dual-stack data center networks without NAT workarounds, which matters for organizations already running IPv6 in their management VLAN.
- 1x RJ-45 Ethernet + 1x Serial + 1x USB: The management port stack — one Ethernet, one serial, one USB — covers both primary network management and out-of-band console access via serial if the network port is unreachable. USB adds firmware update and configuration flexibility without requiring a live network connection.
- Horizontal 0U Mounting: Horizontal mounting fits standard 1U rack space in cabinets not configured for vertical zero-U PDU channels. If your cabinets have side-channel PDU routing, evaluate the vertical variant; if you're using standard 42U open frames or enclosed cabinets without side channels, horizontal is the straightforward install.
- 50/60Hz Input Compatibility: Accepts both 50Hz and 60Hz input, so the same SKU deploys in North American 60Hz facilities and international 50Hz sites without a separate part number — relevant for global enterprise or colocation operators standardizing on a single PDU model.
Integration and Compatibility
The VP7N31A3's protocol breadth — SNMP v1/v2c/v3, Modbus TCP, HTTPS/SSH, Syslog, and SMTP — makes it compatible with the major DCIM platforms and BMS systems used in enterprise and colocation environments. LDAP and RADIUS/TACACS+ integration means user authentication and role management route through your existing directory and AAA infrastructure rather than requiring local account management on each PDU. The C13 and C19 outlet mix handles standard IEC power cords for both mainstream servers (typically C13) and higher-draw devices that ship with C19 cords, including some storage arrays, high-density switches, and older blade chassis PSUs. The NEMA L15-30P input plug requires a matching 30A three-phase circuit — confirm panel breaker and whip availability before ordering. The 3-meter cord length covers most standard-depth cabinet-to-overhead-busway or floor PDU scenarios; measure your specific run before assuming it clears.
Frequently Asked Questions
Q: What type of power plug does the VP7N31A3 use, and what circuit does it require?
A: The VP7N31A3 uses a NEMA L15-30P plug, which requires a dedicated 30-amp three-phase circuit at 200–240V. Confirm your panel has a matching 30A three-phase breaker and the appropriate whip before installation.
Q: What is the difference between the outlet types on the VP7N31A3?
A: The VP7N31A3 provides a mix of C13 and C19 IEC outlets. C13 outlets are the standard for most 1U/2U servers and networking equipment. C19 outlets support higher-amperage devices such as large storage arrays, dense switches, or equipment with C20 input connectors. Check the power requirements of your specific equipment against the outlet types before planning your cabinet layout.
Q: Does the VP7N31A3 support SNMPv3 for secure management?
A: Yes. The VP7N31A3 supports SNMP v1, v2c, and v3. SNMPv3 provides authentication and encryption, making it suitable for enterprise environments with strict network security policies. It also supports RADIUS and TACACS+ for AAA integration.
Q: Can the VP7N31A3 integrate with a Building Management System (BMS)?
A: Yes. The VP7N31A3 supports Modbus TCP in addition to SNMP, which is the protocol most commonly used by BMS and DCIM platforms that don't natively speak SNMP. This allows power consumption data to feed into facility-level energy management systems.
Q: Is the VP7N31A3 compatible with IPv6 networks?
A: Yes. The unit supports both IPv4 and IPv6, making it compatible with dual-stack management networks without requiring NAT or legacy-only addressing.
Q: What monitoring parameters does the VP7N31A3 report at the outlet level?
A: The VP7N31A3 monitors current, power, and voltage at the outlet level — not just at the PDU input. This enables per-device energy tracking, chargeback reporting, and anomaly detection at the individual server or load level.
The VP7N31A3 is the unit I reach for when a client needs genuine outlet-level switched control on a three-phase 208V circuit — not just monitoring, not just bank switching. The combination of a 30A NEMA L15-30P input, 8.6kW capacity, and individual C13/C19 outlet switching gives data center ops teams the control granularity that makes remote hands calls avoidable for the majority of server reboot events.
Technical Highlights:
- Outlet-Level Switching on All 12 Outlets: Every outlet — C13 and C19 — is independently switched. In practice, this means you can sequence startup across a full cabinet to stagger inrush current, which protects your 30A breaker from nuisance trips during a power restore event after an outage.
- SNMP v1/v2c/v3 + RADIUS/TACACS+: SNMPv3 with enterprise AAA integration is not a given on PDUs at this price tier. Having RADIUS and TACACS+ means you don't create a PDU management silo — accounts and roles integrate with your existing directory, and you get a proper audit trail for who switched what outlet and when.
- Modbus TCP Alongside SNMP: The dual-protocol management stack — SNMP for NMS/DCIM and Modbus TCP for BMS — means the VP7N31A3 reports to both your IT monitoring platform and your facilities energy management system simultaneously, without a protocol bridge or additional middleware.
Deployment Considerations:
- The NEMA L15-30P plug is non-negotiable — verify your raised-floor, overhead busway, or wall panel has a matching 30A three-phase receptacle before the unit ships. A last-minute whip fabrication on delivery day is a common and avoidable delay.
- Horizontal mounting consumes 1U of rack space. If your cabinet design uses dedicated zero-U vertical PDU channels on the sides, a vertical Vertiv PDU variant preserves that full 1U for compute — factor this into your cabinet utilization model before specifying horizontal units across a large deployment.
The VP7N31A3 is best positioned in high-density colocation cabinets, enterprise compute rows, and edge data center deployments where remote outlet-level reboot capability is operationally required and three-phase 208V distribution is already in place.
