Vertiv Rpdu Monitored Outlet Level EC 20A 120V 1.9KW Horizontal (12) NEMA 5-20R - VP6N21A1

Vertiv VP6N21A1 Monitored Outlet-Level Horizontal Rackmount PDU

Overview

The Vertiv VP6N21A1 is a single-phase, outlet-level monitored rack PDU rated at 20A/120V (1.9kW) with 12 NEMA 5-20R receptacles in a horizontal 0U form factor. Designed for data center rows, network equipment closets, and security infrastructure racks, the VP6N21A1 delivers per-outlet current, power, and voltage monitoring over a full enterprise protocol stack — without requiring a separate management appliance. If you need real-time load visibility at the outlet level alongside granular access control and remote reboot capabilities, this is the unit to evaluate.

The horizontal mounting profile keeps the PDU flush in a standard 1U bay, leaving vertical rail space clear for denser equipment layouts. The 3-meter input cord with NEMA L5-20P twist-lock plug reaches most in-rack power strips or floor-mounted UPS outputs without extension runs.

Key Features

• Outlet-Level Monitoring (Current, Power, Voltage): Each of the 12 NEMA 5-20R outlets reports real-time current draw, wattage, and voltage — not just aggregate input. This means you can pinpoint which specific device is approaching its circuit limit before a breaker trips, rather than troubleshooting blind after an outage.
• 20A / 120V Single-Phase Input: The 1.9kW total capacity and NEMA L5-20P twist-lock input are matched to standard 20A branch circuits common in US data center and IDF environments. The twist-lock connector prevents accidental disconnection under vibration or cable movement.
• 12 × NEMA 5-20R Receptacles: Twelve standard 20A outlets accommodate a full rack of 1U servers, network switches, cameras, or NVR appliances without daisy-chaining. NEMA 5-20R accepts both 15A and 20A plugs, so mixed-load racks don't require adapter collars.
• Enterprise Protocol Stack — SNMP v1/v2c/v3, HTTPS, SSH, RADIUS, TACACS+, LDAP: Every major DCIM platform and NMS that speaks SNMP v3 can poll this unit for outlet-level telemetry. RADIUS and TACACS+ mean PDU authentication folds into your existing AAA infrastructure — no local password sprawl across dozens of units. SSH encrypts CLI access; HTTPS encrypts the web UI. This is the protocol depth you need in a PCI or HIPAA-regulated environment.
• Modbus TCP Support: Building automation systems and BMS platforms that don't speak SNMP can still pull real-time power data via Modbus TCP — useful in hybrid IT/OT environments where the rack sits alongside industrial control equipment or in physical security control rooms.
• IPv4 and IPv6 Dual-Stack: Native IPv6 support avoids NAT workarounds in environments that have completed or are mid-migration to v6 addressing schemes — increasingly relevant in government and carrier-adjacent deployments.
• Syslog + SMTP Alerting: The PDU ships events to your syslog collector and can send email alerts on threshold breaches — current overload warnings, outlet state changes, or authentication failures — without requiring a separate monitoring agent on a management server.
• NTP Time Synchronization: Event logs are timestamped against NTP, so incident reconstruction correlates directly with your SIEM or ticketing system without manual clock-skew corrections.
• LED Indicators: Front-panel LEDs provide at-a-glance status during physical inspections or emergency response without needing a laptop or KVM access to the management interface.
• 1 × RJ-45 Ethernet + 1 × Serial + 1 × USB: The RJ-45 port handles all IP-based management. The serial port supports out-of-band console access via a terminal server — critical when network connectivity to the PDU is lost. The USB port enables local firmware updates or configuration transfers without network access.
• 50/60 Hz Dual-Frequency Input: Operates on both 50Hz and 60Hz mains — relevant for deployments in mixed-frequency facilities or for equipment staging across regions.

Integration & Compatibility

The VP6N21A1 integrates with Vertiv's power management ecosystem and any third-party DCIM or NMS platform that supports SNMP v1/v2c/v3 — including SolarWinds, PRTG, Nagios, and Nlyte. RSTP support means the management network port can participate in a redundant Ethernet topology without creating loops. For rackmount PDU deployments in physical security environments, the unit pairs cleanly with NVR appliances, PoE switches, and access control panels that draw standard 15A or 20A loads. Review your rack power planning before specifying — 1.9kW total capacity across 12 outlets averages roughly 158W per outlet, which fits most 1U network devices but will constrain high-draw servers or GPU appliances. For higher-density or three-phase requirements, evaluate other models in the Vertiv rPDU lineup. If your rack includes UPS systems, confirm the UPS output receptacle matches the NEMA L5-20P input on this PDU.

Frequently Asked Questions

Q: What is the maximum current capacity of the VP6N21A1?

A: The VP6N21A1 is rated at 20A input at 120V, delivering up to 1.9kW total capacity across all 12 outlets. Each outlet is NEMA 5-20R, rated for up to 20A, though total draw across all outlets cannot exceed the 20A branch circuit limit.

Q: Does the VP6N21A1 support SNMP v3?

A: Yes. The VP6N21A1 supports SNMP v1, v2c, and v3, enabling encrypted, authenticated polling from any compatible NMS or DCIM platform. SNMP v3 is the recommended configuration in security-sensitive environments.

Q: What input plug does the VP6N21A1 use?

A: The VP6N21A1 uses a NEMA L5-20P twist-lock plug on a 3-meter (approximately 10-foot) input cord. This connects to standard 20A twist-lock receptacles on UPS units or PDU whips. Verify your upstream power source has a matching NEMA L5-20R output before ordering.

Q: Can the VP6N21A1 be managed out-of-band if the network is down?

A: Yes. The unit includes a serial console port for out-of-band management via a terminal server or direct serial connection, allowing access to the management interface even when the IP network is unavailable.

Q: Does the VP6N21A1 support IPv6?

A: Yes. The VP6N21A1 supports both IPv4 and IPv6 dual-stack operation, making it compatible with environments that have transitioned to or are running IPv6 addressing.

Q: What authentication protocols does the VP6N21A1 support?

A: The VP6N21A1 supports RADIUS, TACACS+, and LDAP for centralized authentication, allowing PDU access to integrate with existing AAA infrastructure rather than relying on local credentials managed per unit.

Eden Phillips

The detail that stands out on the VP6N21A1 is the combination of outlet-level monitoring with a full enterprise AAA stack — RADIUS, TACACS+, and LDAP — in a unit sized for a standard horizontal 1U bay. Most 20A monitored PDUs at this price point give you SNMP and a web UI with local credentials; this one lets you fold PDU authentication directly into your existing identity infrastructure, which matters significantly when you're managing 40+ PDUs across a multi-rack deployment and can't afford per-unit password hygiene.

Technical Highlights:

• SNMP v1/v2c/v3 + Modbus TCP: Dual protocol management means this unit works equally well in a pure IT NMS environment (SNMP v3 polling) and in hybrid IT/OT deployments where a BMS or SCADA platform speaks Modbus TCP — useful in physical security control rooms where rack infrastructure sits alongside industrial equipment.
• 12 × NEMA 5-20R on 20A/1.9kW: The 5-20R receptacle accepts both 15A and 20A plugs, so you're not forced to standardize plug types across a mixed-load rack. At 1.9kW total, budget roughly 158W average per outlet — comfortably sized for NVRs, PoE switches, and access control panels, but not for high-draw compute nodes.
• Serial Console Port: Out-of-band access via the serial port is non-negotiable in production racks. When the management VLAN goes down — and it will — the serial port is how you recover without rolling a truck. Pair it with a terminal server for full remote out-of-band access.

Deployment Considerations:

• The NEMA L5-20P input is a twist-lock — confirm your UPS or power whip has a matching NEMA L5-20R output receptacle before the unit ships to site. A mismatch here requires an adapter or a field cord swap, neither of which is a good surprise during a rack commission.
• At 20A input with no sub-circuit breakers documented in the available specs, treat the 1.9kW total as a hard ceiling and target 80% utilization (roughly 1.5kW) for continuous loads — standard electrical practice for branch circuit protection.

The VP6N21A1 is a strong fit for multi-rack physical security infrastructure deployments — surveillance NVR rows, access control head-end cabinets, network IDF closets — where per-outlet load visibility and centralized AAA authentication are operational requirements, not nice-to-haves.