Vertiv Rpdu Monitored Outlet Level EC 20A 120V 1.9KW Horizontal (12) NEMA 5-20R - VP6N21A0

Vertiv VP6N21A0 Monitored Outlet-Level Horizontal Rack PDU

Overview

The Vertiv VP6N21A0 is a single-phase, outlet-level monitored rack PDU delivering 20A at 100–120V (1.9kW) across 12 NEMA 5-20R receptacles in a horizontal 0U form factor. Designed for IT closets, edge deployments, and dense 1U rack environments where you need per-outlet current, power, and voltage visibility without sacrificing rack space to a vertical strip, the VP6N21A0 gives facility and IT teams the granularity to catch overloads before they become outages. The onboard LCD display surfaces real-time electrical readings locally, while the RJ-45 Ethernet port handles remote telemetry over SNMP v1/v2c/v3, Modbus TCP, and a full suite of management protocols — no separate monitoring appliance required.

Key Features

• Outlet-Level Current, Voltage, and Power Monitoring: Every one of the 12 NEMA 5-20R outlets reports individually. In a mixed-load rack — servers, switches, storage — that means you can see exactly which device is drawing what, catch runaway loads early, and plan capacity realistically rather than guessing from a single inlet reading.
• 20A / 120V Input via NEMA 5-20P: The 20A input plug means this PDU connects to dedicated 20A branch circuits standard in most data center and server room designs. The 1.9kW total load budget fits comfortably under the 80% continuous-load rule (15.9A practical ceiling), giving you headroom to grow the rack without swapping the PDU.
• 12 NEMA 5-20R Receptacles: Twelve outlets in a horizontal chassis keeps standard 1U servers, switches, and 1U appliances powered without adapters. If your rack is running equipment with C13/C19 plugs, plan for adapters — the 5-20R is a standard North American configuration suited to 120V IT hardware.
• LCD Display for Local Visibility: The onboard LCD shows current electrical parameters at the unit — useful during commissioning, troubleshooting, or when network access is unavailable. No laptop required to verify the PDU is energized and within load limits during initial installation.
• Comprehensive Protocol Stack — SNMP v1/v2c/v3, HTTPS, SSH, Modbus TCP, RADIUS, TACACS+, LDAP: The protocol breadth means the VP6N21A0 fits into enterprise environments with strict authentication (RADIUS/TACACS+), directory integration (LDAP), industrial monitoring (Modbus TCP), and encrypted management (SSH/HTTPS) — without bolting on a separate management layer. SNMP v3 specifically provides authenticated, encrypted trap delivery to your NMS.
• IPv4 and IPv6 Support: Dual-stack networking means you can drop this into a modern IPv6-enabled management VLAN or keep it on a legacy IPv4 segment — no firmware changes required.
• NTP Synchronization and Syslog Export: Time-stamped event logs exported to Syslog are only useful if the timestamps are accurate. NTP sync ensures correlation with server logs, security events, and change management records actually lines up.
• 3-Meter Cord (NEMA 5-20P): The 3m (approximately 10 ft) input cord provides enough reach from a floor-level PDU tap to overhead busway or a rear-of-rack receptacle in most standard 42U to 48U cabinet deployments — verify cord routing before ordering if your power feed is unusually positioned.
• USB and Serial Console Port: The USB port and RJ-45 serial port (1 each) allow out-of-band management and local configuration without requiring network connectivity — important during initial provisioning or post-incident recovery when the management network may be down.

Integration and Compatibility

The VP6N21A0 integrates with Vertiv's rack power management ecosystem and is compatible with any SNMP-capable NMS platform (SolarWinds, PRTG, Nagios, Zabbix, and similar). Modbus TCP support extends visibility to building management systems (BMS) and DCIM tools that use industrial protocols. SMTP alert delivery enables email notifications for threshold breaches without requiring a dedicated monitoring agent. For environments running rack PDUs at scale, the protocol stack and per-outlet granularity make this unit manageable within a standardized power monitoring policy. Review your power infrastructure planning to confirm branch circuit availability and load distribution before deployment. If your environment uses C13 or C19 IEC outlets, evaluate other units in the Vertiv PDU line rather than adapting 5-20R receptacles under sustained load.

Frequently Asked Questions

Q: What is the maximum continuous load the VP6N21A0 should carry?

A: The VP6N21A0 has a 20A maximum input rating at 120V (1.9kW). Per standard electrical practice, continuous loads should not exceed 80% of the rated capacity — approximately 15.9A or 1.9kW practical ceiling for sustained operation across all 12 outlets.

Q: Does the VP6N21A0 support SNMP v3 for secure monitoring?

A: Yes. The VP6N21A0 supports SNMP v1, v2c, and v3. SNMP v3 provides authenticated and encrypted trap delivery, which is required in environments with strict NMS security policies.

Q: Can the VP6N21A0 be monitored remotely without installing additional software?

A: Yes. The RJ-45 Ethernet port supports HTTPS and SSH web/CLI management, SNMP-based NMS integration, SMTP alerting, and Syslog export — all accessible over your existing network without additional software agents on the PDU itself.

Q: What outlet type does the VP6N21A0 use, and are adapters needed for IEC C13/C19 equipment?

A: All 12 outlets are NEMA 5-20R (standard North American 20A, 120V). Equipment with IEC C13 or C19 plugs will require appropriate adapters. This unit is configured for 120V North American deployments only.

Q: Does the VP6N21A0 take up rack unit space?

A: No. The VP6N21A0 is a 0U horizontal PDU, designed to mount in the cable management area or along the rack rail without consuming standard 1U rack space.

Q: What authentication protocols does the VP6N21A0 support for enterprise environments?

A: The VP6N21A0 supports RADIUS, TACACS+, and LDAP for centralized authentication and directory integration, making it compatible with enterprise identity management infrastructure.

Ted Perry

The VP6N21A0 is the unit I reach for when a customer needs outlet-level monitoring in a horizontal 0U form factor on a 20A/120V branch circuit — specifically because the protocol stack goes well beyond what most budget monitored PDUs offer. SNMP v3 with RADIUS and TACACS+ support means this isn't just a monitoring device; it fits inside an enterprise authentication framework without workarounds.

Technical Highlights:

• Outlet-Level Monitoring (Current, Power, Voltage): Per-outlet telemetry across all 12 NEMA 5-20R receptacles gives you the data to identify which specific load in a mixed-use rack is pushing toward threshold — critical for capacity planning in dense edge or colocation environments.
• SNMP v1/v2c/v3 + Modbus TCP: The dual-protocol support (SNMP for IT NMS platforms, Modbus TCP for BMS/DCIM) means this PDU bridges IT and facilities monitoring without deploying separate hardware for each domain — useful in converged infrastructure environments.
• 3m Input Cord, 20A NEMA 5-20P: The 3-meter cord is long enough for most standard rack deployments, but measure your feed-to-PDU distance before ordering — replacing a 10 ft cord after installation is an avoidable service call.

Deployment Considerations:

• The NEMA 5-20P input plug requires a dedicated 20A branch circuit — confirm your rack's circuit rating before installation. A 15A circuit will not accept the 5-20P plug without an adapter, which introduces a protection gap.
• All 12 outlets are NEMA 5-20R, which is optimized for North American 120V IT hardware. If your rack mixes IEC C13/C19 devices, plan for quality 5-20R to C13/C14 adapters and derate the outlet load budget accordingly — do not daisy-chain PDUs.

This is a solid fit for an IT closet or edge rack running 120V North American equipment where the operations team wants NMS-visible per-outlet load data and the security team requires RADIUS or TACACS+ authenticated PDU access — a combination that rules out most entry-level monitored strips.