Vertiv SR2N05020PAA2 20kW 5-Rack Row Cooling System with Fire Suppression

The Vertiv SR2N05020PAA2 is a pre-configured, 5-rack integrated row-cooling solution rated for 20 kW of total IT load — shipped with integrated fire suppression as a complete, coordinated infrastructure pod. If you're deploying a dense edge data center, a purpose-built server room, or a colocation cage that needs to be production-ready fast, this configuration eliminates the multi-vendor integration work that typically burns weeks of pre-deployment engineering time. Each rack in the SR2N05020PAA2 row handles up to 4 kW, the 20 kW Power Management Controller (PMC) distribution manages the full row, and 10 individual 30 A PDUs give you flexible per-rack branch-circuit coverage without over-provisioning a single high-density busway.

Overview

The SR2 platform from Vertiv is a factory-integrated row solution: racks, cooling, power distribution, and — in the AAA2 series — fire suppression arrive as a validated assembly rather than individual components that your team has to align and commission on-site. The SR2N05020PAA2 occupies a 4,500 mm row footprint across five 42U × 600 × 1,400 mm cabinets. That 4.5-meter row fits comfortably within a standard data center hot-aisle/cold-aisle layout and leaves room for a service aisle behind. The single cooling unit in this configuration services the entire 20 kW row — sized correctly for the 4 kW per-rack average, which is the practical sweet spot for mixed compute and storage loads rather than maximum-density GPU clusters. Browse the broader data center infrastructure category for complementary rack PDUs, UPS systems, and containment accessories.

Key Features

• 20 kW Total Row Capacity: The full row is engineered and validated at 20 kW — not a theoretical ceiling. Deploying five racks at an average of 4 kW each leaves virtually no derating headroom to worry about, and the 20 kW PMC distribution tier means your power management scales with the load from day one rather than requiring a retrofit when density increases.
• Integrated Fire Suppression (AAA2 Series): The SR2N05020PAA2 carries the AAA2 designation, confirming factory-installed fire suppression. This eliminates a separate suppression contractor, separate commissioning timeline, and the compliance documentation gap that comes from integrating suppression after-the-fact. For regulated environments — financial services, healthcare, government edge — this is the spec that closes the risk conversation.
• 10 × 30 A PDUs Across Five Racks: Two 30 A PDUs per cabinet gives each rack dual independent branch circuits — a meaningful redundancy step for servers with dual power supplies. You're not sharing a single breaker across the row, and you're not over-engineering with high-density busway when standard 30 A circuits match the load profile.
• Single Cooling Unit for Full Row: One cooling unit serving 20 kW across five racks keeps mechanical complexity low and simplifies maintenance contracts. Compare this to the FAA2 series (SR2N05020FAA2) which ships with two cooling units for the same rack count — the single-unit configuration in this SKU is appropriate when the site already has supplemental in-row cooling or when the 4 kW/rack density doesn't stress a single unit.
• 42U × 600 × 1,400 mm Cabinet Form Factor: 42U gives you full standard server and network hardware compatibility. The 600 mm width fits standard tile grids and raised-floor cut-outs. The 1,400 mm depth accommodates full-depth 1U–4U servers, top-of-rack switches, and patch panels without cable management compromises.
• 20 kW PMC Distribution: The Power Management Controller at the row level handles monitoring and distribution for the entire 20 kW budget — not per-rack metering bolted together after the fact. This gives facilities teams a single point of real-time power visibility across all five cabinets, which matters for capacity planning and chargeback reporting in multi-tenant or enterprise shared environments.
• 4,500 mm Row Length — Right-Sized for Five Racks: At 4.5 meters, this row fits within a standard 10-meter data center bay without consuming the full bay, leaving room for a dedicated aisle containment corridor or an adjacent network equipment row. Compare to the AAA2 fire-suppression series: the 3-rack variant (SR2N03020PAA2) runs 3,300 mm; the 4-rack variant (SR2N04020PAA2) runs 3,900 mm. The 5-rack configuration adds 600 mm for the additional cabinet and suppression integration.

Integration and Compatibility

The SR2N05020PAA2 is designed for data center power and cooling infrastructure environments that require coordinated row-level deployment. The 20 kW PMC distribution tier is compatible with Vertiv's monitoring and management ecosystem, enabling integration into building management systems (BMS) and data center infrastructure management (DCIM) platforms. The 30 A PDU specification aligns with standard North American and international facility branch-circuit standards. Each 42U cabinet accepts standard EIA-310 rack equipment. If your site uses hot-aisle containment, the 1,400 mm cabinet depth is sufficient for a rear door heat exchanger if load density grows post-commissioning. For guidance on sizing row cooling to your specific kW/rack profile, consult a data center cooling specialist before finalizing rack population density.

When This Is the Correct Choice

Choose the SR2N05020PAA2 when you need a 20 kW, 5-rack integrated row with fire suppression included at the factory level — specifically where the build-versus-buy tradeoff favors a pre-validated, single-SKU procurement over assembling racks, PDUs, cooling, and suppression from separate vendors. It's well-matched to edge data centers, enterprise server rooms, and regulated-industry deployments where suppression documentation must be in order before the facility goes live.

When to Choose a Different Model

If your per-rack density exceeds 4 kW average — GPU clusters, high-density hyperconverged nodes — look at the 3-rack variant (SR2N03020PAA2 at 6.6 kW/rack) or the 4-rack variant (SR2N04020PAA2 at 5 kW/rack) in the same AAA2 fire-suppression family. If cooling redundancy at the row level is a hard requirement (N+1 mechanical), the SR2N05020FAA2 provides two cooling units for the same 5-rack, 20 kW configuration. If fire suppression is not required by code or site policy, the SR2N05020PAA1 (same rack count, same kW, no suppression) reduces cost and row length to 3,900 mm.

Frequently Asked Questions

Q: Does the SR2N05020PAA2 include fire suppression?

A: Yes. The AAA2 suffix in the part number designates factory-integrated fire suppression. This differentiates the SR2N05020PAA2 from the SR2N05020PAA1 (identical configuration, no suppression) and the SR2N05020NAA2 (5 PDUs instead of 10, with suppression).

Q: How many PDUs are included per rack?

A: The SR2N05020PAA2 includes 10 PDUs total across 5 racks — 2 × 30 A PDUs per cabinet. This provides dual independent branch circuits per rack, supporting dual-corded server and storage hardware.

Q: What is the total row footprint?

A: The row measures 4,500 mm in length. Each cabinet is 42U × 600 mm wide × 1,400 mm deep. Plan for additional clearance at each end for containment panels and service access.

Q: How does this SKU differ from the SR2N05020FAA2?

A: The SR2N05020FAA2 includes two cooling units (versus one in the SR2N05020PAA2) and extends to 4,800 mm in length. Both include fire suppression and 10 PDUs. Choose the FAA2 if you require N+1 cooling redundancy at the row level.

Q: What is the per-rack power capacity?

A: Each of the five cabinets is rated for 4 kW, totaling 20 kW for the row. The 20 kW PMC distribution unit manages power monitoring and distribution across all five racks from a single control point.

Q: Can this row be expanded after installation?

A: The SR2N05020PAA2 is a fixed 5-rack configuration. If you anticipate needing more racks or higher total kW, Vertiv offers larger row configurations in the SR2 family. Review the full product family to select the rack count and kW rating that matches your 3-year capacity plan, not just current load.

Ted Perry

The SR2N05020PAA2 is one of those configurations I recommend specifically to teams that have gotten burned by the multi-vendor integration problem — where racks, cooling, PDUs, and suppression each arrive from a different vendor with a different commissioning team and a different warranty contact. This SKU bundles all of that into a single factory-validated assembly at 20 kW across five 42U cabinets, with fire suppression already integrated. That 4,500 mm row fits into a standard data center bay without consuming it, and the 10 × 30 A PDUs mean you're entering the deployment with dual circuits per rack already in place — not something you retrofit later when the compliance team asks about branch-circuit redundancy.

Technical Highlights:

• 20 kW PMC Distribution: The Power Management Controller handles the full 20 kW row as a single managed entity — not five individual rack meters stitched together. This simplifies DCIM integration and gives facilities a clean single data point for capacity reporting.
• 10 × 30 A PDUs (2 per rack): Dual 30 A circuits per cabinet support dual-corded servers without requiring a separate branch-circuit upgrade. At 4 kW average per rack, these circuits are appropriately sized — not over-engineered with unnecessary high-density busway.
• Factory Fire Suppression (AAA2): The suppression system ships integrated, not field-added. For regulated deployments — financial, healthcare, government — this collapses weeks of post-installation coordination and closes the documentation gap that a field-installed system creates.

Deployment Considerations:

• The single cooling unit serves the full 4,500 mm row at 20 kW. Verify that your ambient conditions and airflow management (containment, raised floor CFM, or in-row supplement) support single-unit operation at your actual IT load before finalizing the configuration — if you're running consistently above 16–18 kW or have poor containment, the FAA2 variant with two cooling units is the safer call.
• Watch the row length: at 4,500 mm, this is the longest single-cooling-unit configuration in the AAA2 family. Confirm your floor loading and tile cut-out plan accounts for the full 4.5-meter footprint plus end-cap clearance before equipment arrives on site.

The SR2N05020PAA2 is the right call for a regulated-industry edge deployment or enterprise server room where fire suppression is a code or audit requirement, the 4 kW/rack density matches the planned IT load, and the priority is a single-vendor, pre-validated infrastructure pod rather than a field-assembled row.