Vertiv Rpdu Switched Unit Level Monitoring EC 16A or 20A 120V or 208V or 230V 1.9KW - VP5U21A0

Vertiv VP5U21A0 Switched Rack PDU with Unit-Level Monitoring

Overview

The Vertiv VP5U21A0 is a 1U horizontal switched rack PDU with unit-level current, voltage, and power monitoring — the right fit for dense compute environments where per-outlet remote switching and real-time load visibility matter as much as raw power delivery. At 20A input capacity and up to 3,600W, it handles a fully loaded 1U server row without throttling. The VP5U21A0 ships with 12 outlets (C13 and C19 mix), dual Ethernet ports for daisy-chain management, and a front-panel LCD for local readout — no console session required for a quick load check.

Explore the broader Vertiv power management line if you're building out a multi-PDU row or need higher-density configurations.

Key Features

• Switched Outlet Control: Each outlet can be individually powered on, off, or cycled via network — useful for remotely recovering a locked-up device without dispatching a technician to the data center floor. That's the single biggest operational argument for switched over monitored-only PDUs in remote or unmanned edge deployments.
• Unit-Level Monitoring — Current, Voltage, Power: Real-time readings at the PDU inlet level mean you can catch approaching overload conditions before a breaker trips. At 20A input, you're watching actual draw against capacity, not estimating. Pair this with SNMP traps and you get proactive alerting rather than reactive recovery.
• 20A / 3,600W Capacity with 100–240V Input Range: The wide input voltage range (100–240V) means a single SKU deploys in North American 120V or 208V circuits, or international 230V installations without reordering. At 3,600W continuous, it supports high-density 1U compute rows where individual servers draw 400–600W each.
• 12 Outlets — C13 + C19 Mix: The C13/C19 combination matters in mixed environments where some devices (servers, switches) use standard C13 IEC cords and others (high-draw power supplies, some UPS bypass units) require the beefier C19. One PDU handles both without adapters.
• Dual Ethernet (RJ-45) Ports: Two network ports allow daisy-chaining multiple PDUs on a single IP address or connecting to separate management VLANs for redundancy. In long cabinet runs, this eliminates the need to home-run individual network cables to every PDU.
• Protocol Depth — SNMP v1/v2c/v3, RADIUS, LDAP, TACACS+: Enterprise authentication integration is built in. LDAP and RADIUS mean PDU access follows your existing directory policies — no local credential sprawl across 40 PDUs in a pod. TACACS+ is specifically useful in Cisco-heavy network operations environments where centralized AAA is already in place.
• IPv4/IPv6 Dual-Stack with HTTPS, SSH, SMTP, Syslog: Management traffic can run over encrypted channels (HTTPS, SSH) rather than cleartext HTTP/Telnet. Syslog and SMTP alerting route to your existing log aggregators or NOC email without additional middleware.
• Front LCD Display: Local load readout without a laptop or console connection. On a busy data center floor where you're checking 20 cabinets in sequence, this is faster than pulling up a browser per PDU.
• 3-Meter Cable: The 3m (roughly 10 ft) input cord reaches from mid-cabinet to floor-mounted PDU breakout panels or overhead busways without extension cables in most standard 42U rack layouts.
• 1U Horizontal Form Factor: Horizontal mounting keeps the PDU in a defined rack unit rather than consuming side channels. In fully populated cabinets where every U matters, the form factor is a practical constraint, not a preference.

Integration & Compatibility

The VP5U21A0 integrates with DCIM and BMS platforms via SNMP v1/v2c/v3 and supports NTP time synchronization for accurate event timestamps in Syslog records. The dual-stack IPv4/IPv6 network stack means it coexists with modern network architectures without legacy workarounds. DHCP simplifies initial deployment; static IP assignment via the LCD or CLI is supported for production environments where IP stability matters. For environments standardized on rack PDUs and power distribution, the VP5U21A0 slots into existing Vertiv management ecosystems.

USB connectivity (1 port) supports local firmware updates or console access depending on firmware version — confirm the specific use with Vertiv documentation for your firmware revision before planning a mass-deployment firmware update workflow.

If you're spec'ing the full cabinet build, pair this PDU with appropriate managed switches for PoE-driven edge compute, or review your UPS sizing to ensure upstream protection matches the 20A draw this PDU can sustain.

Frequently Asked Questions

Q: What is the maximum power output of the VP5U21A0?

A: The VP5U21A0 supports a maximum input of 20A and up to 3,600W, with a nominal input voltage range of 100–240V to accommodate both North American and international circuits.

Q: Does the VP5U21A0 support SNMP monitoring and alerting?

A: Yes. The VP5U21A0 supports SNMP v1, v2c, and v3, enabling integration with standard NMS platforms for real-time load monitoring and threshold-based alerting on current, voltage, and power.

Q: Can I control individual outlets remotely on the VP5U21A0?

A: Yes. The VP5U21A0 is a switched PDU, meaning each outlet can be individually powered on, off, or power-cycled via network management — useful for remote device recovery without physical access.

Q: What outlet types does the VP5U21A0 provide?

A: The VP5U21A0 provides 12 AC outlets in a mix of C13 and C19 coupler types, supporting both standard server power cords and higher-draw C19-terminated power supplies.

Q: Does the VP5U21A0 support enterprise authentication like RADIUS or LDAP?

A: Yes. The VP5U21A0 supports LDAP, RADIUS, and TACACS+ for centralized access control, allowing PDU authentication to integrate with existing enterprise directory services.

Q: How many network ports does the VP5U21A0 have, and can PDUs be daisy-chained?

A: The VP5U21A0 has two Ethernet (RJ-45) ports, which support daisy-chaining multiple PDUs on a single network connection to reduce cabling overhead in large cabinet deployments.

Karl Wilson

The VP5U21A0 earns its place in edge and colocation deployments primarily on the strength of its protocol stack — SNMP v3, LDAP, RADIUS, and TACACS+ in a 1U switched PDU is not a given at this tier, and it means you're not managing PDU credentials outside your existing AAA infrastructure. At 20A and 3,600W, it fits the sweet spot for a fully loaded 1U compute shelf where servers average 250–400W each.

Technical Highlights:

• Switched Outlet Architecture: Per-outlet on/off/reboot via network eliminates truck rolls for hung devices — in unmanned edge cabinets, this is the feature that justifies the switched-over-monitored premium.
• Dual Ethernet Ports: Daisy-chaining reduces IP address consumption and cabling runs in multi-PDU cabinets; two ports also support separation of in-band and out-of-band management segments.
• SNMP v1/v2c/v3 + Syslog + SMTP: Full integration into standard NMS and SIEM stacks without custom middleware — v3 specifically adds authentication and encryption that v1/v2c lack, which matters for compliance-sensitive environments.

Deployment Considerations:

• The 3-meter input cord works in most standard 42U configurations, but verify cord reach before ordering for non-standard cabinet depths or overhead busway installations where cord routing adds length.
• Unit-level monitoring covers the inlet only — if you need per-outlet current metering (not just switching), confirm the firmware feature set or consider a higher-tier PDU model in the Vertiv line that includes outlet-level metering explicitly.

The VP5U21A0 is best suited for unmanned or remote-edge data center cabinets where IT staff need remote outlet cycling, SNMP-driven load alerts, and directory-integrated access control without deploying a separate out-of-band management layer.