Vertiv Rpdu Monitored Outlet Level EC 20A 120/208V WYE 5.7KW Vertical (21) Lockin - VP6N20A1

Vertiv VP6N20A1 Outlet-Level Monitored 3-Phase Vertical PDU

Overview

The Vertiv VP6N20A1 is a 0U vertical rack PDU built for data center and server room deployments where per-outlet current visibility is non-negotiable. Rated at 20A on a three-phase 120/208V WYE input (NEMA L21-20P plug), it delivers up to 5.7kW of usable power across 24 IEC C13 locking outlets — enough to handle a full rack of 1U servers or a mixed load of network and compute gear without a separate metering unit. If you've ever had a circuit trip mid-shift because nobody was watching outlet-level draw, the VP6N20A1 is the answer to that problem.

This unit fits the power distribution tier of a well-designed rack infrastructure, slotting into a vertical 0U position so it consumes zero rack units while still providing real-time monitoring data back to your DCIM or BMS platform over dual Ethernet.

Key Features

• Outlet-Level Monitoring (Current, Voltage, Power, Temperature): Every outlet reports live current and power draw — not just the input feed. This matters when you're balancing load across a blade chassis or trying to identify which device is pulling excess current before it trips a breaker at 2 AM. Voltage and temperature monitoring round out the picture, flagging thermal hotspots or supply irregularities before they become outages.
• 24 IEC C13 Locking Outlets: The locking C13 form factor prevents accidental disconnection under cable stress — a real problem in high-density racks where cable management is tight. Twenty-four outlets on a single 0U vertical unit handles a full 42U rack without daisy-chaining a second PDU in most configurations.
• Three-Phase 20A Input via NEMA L21-20P: Three-phase WYE distribution at 120/208V with a 20A input means you can pull from a 3-phase panel and distribute load across all three legs, reducing per-phase current draw. At 5.7kW usable capacity, this is appropriately sized for mid-density compute racks — not a full high-density GPU cluster, but solid for 10–20 servers or mixed network/storage gear.
• Dual RJ-45 Ethernet Ports: Two network ports support daisy-chain networking between PDUs, reducing switch port consumption when you're managing a row of racks. It also provides network redundancy options — connect both ports to separate switches for path diversity without adding a second PDU.
• Daisy-Chain Support: Chain multiple PDUs together over the dual Ethernet ports and manage them through a single IP address. In a 10-rack row, this can reduce network management overhead significantly compared to individually addressed units.
• Broad Protocol Stack (SNMP v1/v2c/v3, HTTPS, SSH, LDAP, RADIUS, TACACS+, Modbus TCP): SNMP v3 with authentication and encryption satisfies most enterprise security policies out of the box. LDAP, RADIUS, and TACACS+ integration means you can enforce centralized AAA — no local accounts to audit and rotate. Modbus TCP opens a path to BMS and building automation systems that don't speak SNMP. RSTP prevents network loops when daisy-chaining. This protocol breadth means the VP6N20A1 integrates into virtually any enterprise monitoring stack without a custom adapter.
• USB Port + Reset Button: The USB port provides local firmware update and configuration capability without requiring network access — useful during initial commissioning or recovery scenarios. The hardware reset button gives you a fail-safe path back to factory defaults if network credentials are lost.
• LED Display + LED Indicators: Local LED readout gives technicians on the floor immediate status without pulling up a browser — load status, fault conditions, and outlet state at a glance. In colocation environments where remote hands need to verify state before touching anything, this matters.
• 3-Meter Cord: The 3m input cord (approximately 10 feet) provides adequate reach from a standard floor-mount PDU busway or raised-floor power drop to the vertical PDU rail without requiring extension cords or custom lengths in most rack configurations.
• IPv4/IPv6 Dual-Stack + NTP/SMTP/Syslog: Dual-stack network support future-proofs the deployment against IPv6-only management networks. NTP synchronization keeps event timestamps accurate for audit logs. SMTP alerting and Syslog forwarding integrate directly into SOC and NOC workflows — no polling required, alerts push out on threshold crossing.

Integration & Compatibility

The VP6N20A1 integrates with any SNMP-based DCIM, IPAM, or NMS platform — including SolarWinds, PRTG, Nagios, and Vertiv's own Vertiv Avocent DSView and Trellis management software. Modbus TCP support extends compatibility to building management systems from Johnson Controls, Schneider EcoStruxure, and similar BMS platforms. The LDAP/RADIUS/TACACS+ stack supports Active Directory and TACACS+ servers used in enterprise and government network environments. For deployments using a structured rack cabling approach, the 0U vertical form factor pairs with standard 2-post or 4-post open-frame and enclosed racks — verify your rack rail system supports vertical PDU mounting hardware before ordering.

Frequently Asked Questions

Q: What input plug does the VP6N20A1 use, and what panel breaker does it require?

A: The VP6N20A1 uses a NEMA L21-20P input plug, which requires a 20A three-phase 120/208V WYE circuit. Per NEC 80% continuous load rule, plan your panel breaker for a 25A three-phase circuit to stay within code for continuous loads.

Q: Does the VP6N20A1 support per-outlet switching, or is it monitoring only?

A: The VP6N20A1 is a monitored outlet-level unit — it provides per-outlet current, voltage, power, and temperature monitoring but does not offer remote outlet switching (power cycling individual outlets remotely). If you need remote outlet switching, look at Vertiv's switched PDU variants in the same family.

Q: How many PDUs can be daisy-chained together on a single IP address?

A: The VP6N20A1 supports daisy-chaining via its dual RJ-45 Ethernet ports. Consult Vertiv's configuration guide for the maximum chain length supported per firmware version — typically up to 8–16 units per chain depending on the platform, but verify against the current Vertiv documentation for your firmware revision.

Q: What network protocols does the VP6N20A1 support for enterprise integration?

A: The VP6N20A1 supports DHCP, HTTP, HTTPS, IPv4, IPv6, LDAP, NTP, RADIUS, RSTP, SSH, SMTP, SNMP v1/v2c/v3, Syslog, TACACS+, and Modbus TCP. This covers SNMP-based NMS platforms, enterprise AAA via Active Directory/LDAP, and BMS integration via Modbus TCP.

Q: What outlet type does the VP6N20A1 use, and are the outlets locking?

A: All 24 outlets are IEC C13 locking connectors (C13 coupler). The locking mechanism prevents accidental disconnection under cable tension — important in high-density racks.

Q: What is the total power capacity of the VP6N20A1?

A: The VP6N20A1 delivers up to 5.7kW at 20A on a 120/208V three-phase WYE input. Derate to 80% (4.56kW) for continuous loads per NEC guidelines.

Ted Perry

The VP6N20A1 sits in a specific niche: you need outlet-level visibility on a three-phase 20A feed, you want the PDU to speak SNMP v3 natively, and you need it to integrate with existing AAA infrastructure without creating a fleet of locally-managed credentials. The dual RJ-45 ports for daisy-chaining are underrated — in a 10-rack row, you can manage the entire PDU fleet from two switch ports instead of ten, which matters when your OOB management VLAN switch has limited port count.

Technical Highlights:

• Outlet-Level Monitoring (Current + Power + Voltage + Temperature): Four monitored parameters per outlet — not just aggregate input current. This is the difference between knowing your rack is at 15A total and knowing which specific device is drawing 3A more than its nameplate spec.
• SNMP v3 + TACACS+ + LDAP: The full AAA stack means this unit integrates into enterprise network management without a separate credential silo. TACACS+ in particular is frequently required in government and finance deployments where every management session must be logged to a central AAA server.
• 24 Locking C13 Outlets on 0U Vertical: Locking C13 at 24 positions in zero rack units is the right density for mid-tier compute racks. The locking collars aren't optional nicety — in colos where vibration from HVAC or adjacent equipment is constant, standard C13 connectors work loose over months.

Deployment Considerations:

• Verify your rack supports vertical PDU rail mounting before ordering — 0U vertical PDUs require a dedicated mounting channel, typically a side rail or rear vertical bracket. Not all 2-post open-frame racks include this without an accessory kit.
• The 5.7kW capacity at 20A is the theoretical maximum — apply the NEC 80% continuous load derating and your usable continuous capacity drops to approximately 4.56kW. Size your rack load accordingly before assuming this covers a full 42U high-density deployment.

The VP6N20A1 is the right unit for enterprise IT closets, colocation cage deployments, and mid-density server rooms where three-phase power is already in place, outlet-level current data feeds into a DCIM or NOC dashboard, and the management team requires SNMP v3 with centralized AAA — not a consumer-grade PDU with a web UI and local accounts.