Vertiv VP7N31A1 Switched Outlet-Level Monitoring PDU, 30A 208V Horizontal
Overview
The Vertiv VP7N31A1 is a horizontal, zero-U rack PDU built for dense data center and server room environments where outlet-level power control and metering are non-negotiable. Rated at 30A/208V (4.9kW) with a NEMA L6-30P input plug and a 3-meter cord, it delivers twelve managed outlets — a mix of C13 and C19 receptacles — across a single-phase circuit. The switched, outlet-level monitoring design means you can remotely cycle individual outlets, monitor per-outlet current and power consumption, and integrate live telemetry directly into your DCIM or NMS stack. If your operations team has ever had to physically walk a rack to hard-reboot a locked-up device, the power distribution architecture of this unit is specifically designed to eliminate that workflow.
Key Features
- Outlet-Level Switching (12 Outlets): Each of the 12 outlets can be individually switched on, off, or power-cycled remotely. This matters in high-density racks where a single locked-up server or network appliance would otherwise require a physical intervention — saving dispatch time and reducing MTTR. Outlets are a mix of C13 (for standard 1U servers and networking gear) and C19 (for higher-draw devices like blade chassis PSUs), giving you flexibility to populate the PDU with diverse equipment without adapters.
- 30A/208V Single-Phase Input (NEMA L6-30P): At 30A on a 208V circuit, the VP7N31A1 delivers 4.9kW of usable capacity. Running at the industry-standard 80% derate puts your safe continuous draw at around 3.9kW — enough to fully populate a mid-density rack. The L6-30P plug is the standard for 208V 30A circuits in North American data centers; confirm your PDU whips are wired accordingly before ordering.
- Current, Power, and Voltage Monitoring: The unit monitors all three parameters — current (A), power (W/kW), and voltage (V) — giving you the data needed to detect load imbalances, spot energy waste, and build capacity utilization reports. This is the foundation of any credible PUE tracking program at the rack level. Without outlet-level granularity you're guessing which device is drawing what; with it, you can charge back power consumption per tenant or per application.
- LCD Display: A local LCD panel lets technicians read current PDU status without a laptop or network connection. Useful during initial commissioning, audits, or any time the management network is unavailable.
- Broad Network Protocol Support: The integrated Ethernet (RJ-45) management port supports SNMP v1/v2c/v3, HTTPS, SSH, SMTP, Syslog, Modbus TCP, LDAP, RADIUS, TACACS+, NTP, RSTP, DHCP, IPv4, and IPv6. SNMP v3 with authentication and encryption is critical in enterprise environments where SNMPv1/v2c community strings are a known security liability. RADIUS and TACACS+ integration means you can enforce centralized AAA policies rather than managing local PDU credentials per unit.
- RSTP Network Topology Awareness: Support for Rapid Spanning Tree Protocol (RSTP) means the PDU can participate correctly in managed network topologies without creating loops — relevant when daisy-chaining PDUs or connecting to redundant switch fabrics.
- 3-Meter Input Cord: The 3m (approximately 9.8 ft) cord provides enough reach to connect to floor-level PDU whips or overhead busways without extension cords. Measure your rack-to-panel run before assuming standard cord length is sufficient for your row layout.
- USB and Serial Ports: One USB port and one serial port are included. The serial port supports out-of-band console access — a critical fallback when the IP management path is unavailable due to network failure or misconfiguration. The USB port typically supports firmware updates and configuration import/export.
Integration and Compatibility
The VP7N31A1 is designed to integrate with enterprise DCIM platforms and NMS tools via SNMP v3 and Modbus TCP. The Vertiv power management ecosystem supports centralized monitoring across multiple PDUs through Vertiv's Trellis and Avocent management platforms, though any SNMP-capable NMS (SolarWinds, PRTG, Nagios, Zabbix) can poll the unit directly. LDAP and RADIUS support allows the PDU to authenticate against existing Active Directory or FreeRADIUS infrastructure — no per-device credential islands. IPv6 support future-proofs the unit for environments transitioning away from IPv4-only management networks. For integration into broader data center infrastructure management workflows, the Modbus TCP interface provides compatibility with building management systems (BMS) that use Modbus as their native protocol. Review Vertiv's compatibility matrix for specific DCIM platform integration guides before deploying in a Trellis-managed environment.
Frequently Asked Questions
Q: What input plug type does the VP7N31A1 use, and what circuit is required?
A: The VP7N31A1 uses a NEMA L6-30P input plug, which requires a 30A, 208V single-phase circuit. This is standard in North American data centers. Confirm your PDU whip or PDU panel is wired for L6-30 before ordering.
Q: Can I remotely reboot individual outlets on the VP7N31A1?
A: Yes. The VP7N31A1 is a switched, outlet-level PDU, meaning each of the 12 outlets can be individually switched on, off, or power-cycled remotely via the network management interface. This eliminates physical dispatch for hard reboots.
Q: What network management protocols does the VP7N31A1 support?
A: The VP7N31A1 supports SNMP v1/v2c/v3, HTTPS, SSH, SMTP, Syslog, Modbus TCP, LDAP, RADIUS, TACACS+, NTP, RSTP, DHCP, IPv4, and IPv6. SNMP v3 provides authenticated and encrypted SNMP polling for enterprise security requirements.
Q: What outlet types are on the VP7N31A1?
A: The unit provides a combination of IEC C13 and IEC C19 outlets across its 12 positions. C13 is standard for 1U servers and networking gear; C19 handles higher-current loads like blade chassis power supplies. Exact per-position layout should be confirmed against the Vertiv product datasheet.
Q: Does the VP7N31A1 support centralized authentication?
A: Yes. The VP7N31A1 supports LDAP, RADIUS, and TACACS+ for centralized authentication and authorization, allowing you to enforce enterprise AAA policies without managing local credentials on each PDU.
Q: What is the safe continuous power draw for the VP7N31A1?
A: The unit is rated at 30A/208V (4.9kW). Applying the standard 80% continuous load derate for branch circuits puts the recommended maximum continuous draw at approximately 3.9kW. Size your rack load accordingly.
The VP7N31A1 covers a specific gap in rack power management: you need per-outlet switching and metering on a 30A/208V circuit without stepping up to a full 3-phase unit. At 4.9kW with 12 mixed C13/C19 outlets and a 3-meter cord, this PDU is sized for a mid-density compute rack where selective remote reboot is a real operational requirement, not a nice-to-have.
Technical Highlights:
- SNMP v3 with RADIUS/TACACS+: SNMPv1/v2c community strings are a well-documented attack surface in data center environments. SNMP v3 with auth/priv, combined with RADIUS or TACACS+ for management-plane access, brings the VP7N31A1 up to enterprise security baselines without requiring a separate out-of-band management appliance.
- Outlet-Level Switching on C13/C19 Mix: The combination of C13 and C19 receptacles on a single switched PDU means you can populate a rack with both standard 1U servers and higher-draw blade PSUs without needing two separate PDUs. Each outlet is individually controllable — cycle a locked NIC on a storage node without touching anything else in the rack.
- Modbus TCP alongside SNMP: Most PDUs speak SNMP or proprietary APIs. Modbus TCP support is notable because it opens native integration paths into building management systems and SCADA-layer DCIM tools that predate SNMP-centric platforms — relevant in co-location and industrial edge deployments.
Deployment Considerations:
- The NEMA L6-30P plug is not interchangeable with L5-30 (120V) or L6-20 (208V/20A) — verify your PDU panel whips before the unit ships. A mis-matched receptacle on day one is a common commissioning delay.
- The 80% derate on 30A brings your safe continuous ceiling to 24A / ~3.9kW. If your planned rack load is 4.2kW or higher, size up to a 40A or 60A PDU rather than run this unit near its limit on a 24/7 basis.
This PDU fits well in a co-location cage or enterprise edge rack where IT operations staff need remote outlet control and energy metering per-device — specifically where RADIUS-integrated management access is a compliance requirement and where the mixed C13/C19 outlet layout matches a heterogeneous server and networking stack.
