Vertiv VA1N1100 Rack PDU with Basic Transfer Switch, 15A 120V 10-Outlet 1U Horizontal
Overview
The Vertiv VA1N1100 is a 1U horizontal rack power distribution unit with an integrated basic transfer switch, designed to deliver 15A of 120V power to 10 downstream NEMA 5-15R receptacles from a single NEMA L5-15P input. At 1.4kW capacity, it fits rack environments where you need orderly power distribution to multiple 1U servers, network devices, or edge appliances — without the footprint or cost of a metered or switched PDU when basic distribution is all the application demands. The upgradeable designation means this unit's transfer switch functionality can be expanded as your power redundancy requirements evolve, without replacing the entire PDU infrastructure.
Vertiv's rack power products are purpose-built for data center and IT closet environments where uptime and density matter. The VA1N1100 sits within the rack PDU category as a cost-efficient entry point for single-phase horizontal distribution in standard 19-inch racks.
Key Features
- 10x NEMA 5-15R Output Receptacles: Ten standard 15A outlets cover a full rack column of 1U devices — typical for edge switches, 1U servers, or access control appliances — without daisy-chaining power strips that introduce unmanaged load risk.
- 15A / 120V / 1.4kW Capacity: The 15A input rating matches standard 15A branch circuits, making it a direct fit for most US commercial electrical panels without special circuit provisioning. The 1.4kW load ceiling is realistic for 6–8 actively loaded 1U devices, so plan your device count against actual draw, not just outlet count.
- NEMA L5-15P Locking Input Plug: The twist-lock L5-15P input connector prevents accidental disconnection under vibration or cable pull — a meaningful detail in dense rack environments where cable management is imperfect and a dropped PDU input would drop all 10 downstream outlets simultaneously.
- 1U Horizontal Mounting: Occupying a single rack unit horizontally, the VA1N1100 mounts in standard 19-inch EIA racks without consuming vertical space disproportionate to its outlet count. Horizontal orientation keeps power cables routed to the sides, supporting cleaner airflow management than vertical zero-U alternatives in some chassis configurations.
- Basic Upgradeable Transfer Switch: The transfer switch capability means this PDU can source power from a secondary input when the primary fails — critical for environments running without a UPS on every device. The 'upgradeable' designation indicates the switching tier can be advanced without full hardware replacement, protecting the initial investment as redundancy needs grow.
- Wide Operating Temperature Range (0–60°C): Rated across the full 0–60°C range, the VA1N1100 handles everything from climate-controlled data centers to warmer IDF closets or light industrial enclosures where cooling is intermittent — no derating required across that span based on available specs.
- 50/60 Hz Input Frequency Compatibility: Accepts both 50Hz and 60Hz AC input, which matters if this hardware will be deployed internationally or in facilities with non-standard generator outputs that can drift from the nominal 60Hz grid frequency.
- 3-Meter Power Cord: The 3m (approximately 10 ft) input cord provides meaningful routing flexibility within a rack cabinet, reaching floor-level PDU whips or overhead busway drops without requiring a cord extender that would introduce an additional failure point.
Integration & Compatibility
The VA1N1100 is compatible with any standard 19-inch EIA rack or two-post open-frame rack that supports 1U horizontal PDU mounting. The NEMA L5-15P input is the industry-standard twist-lock connector for 15A 120V branch circuits in North American data center environments, compatible with all major UPS output whips and in-row PDU tap boxes rated at L5-15P. Downstream devices must use NEMA 5-15 plugs (standard North American two- or three-prong) — devices requiring IEC C13/C19, NEMA 5-20, or other outlet formats are not compatible with this PDU without an adapter, which would void the clean load path. For rack PDU selection guidance, match your total device draw against the 15A/1.4kW ceiling with a 20% headroom buffer — do not load a 15A PDU above 12A continuous per NEC guidelines. If your rack load exceeds 12A sustained, step up to a 20A or 30A PDU variant within the Vertiv lineup. Pair this unit with a compatible UPS or transfer switch upstream if automatic transfer is required at the circuit level rather than the PDU level.
Frequently Asked Questions
Q: What input plug does the VA1N1100 use, and what circuit does it require?
A: The VA1N1100 uses a NEMA L5-15P twist-lock input plug and requires a standard 15A, 120V branch circuit. It is compatible with 50Hz or 60Hz input frequency.
Q: How many outlets does the VA1N1100 provide, and what type are they?
A: The unit provides 10 NEMA 5-15R receptacles — standard North American 15A outlets. Devices requiring IEC C13, NEMA 5-20, or other outlet formats will need an adapter.
Q: What does 'upgradeable' mean for the VA1N1100 transfer switch?
A: The 'upgradeable' designation indicates the VA1N1100's basic transfer switch functionality can be advanced to a higher tier without replacing the full PDU unit. This protects the hardware investment as power redundancy requirements evolve.
Q: What is the maximum load I should put on the VA1N1100?
A: The unit is rated for 15A at 120V (1.4kW). Per NEC continuous-load guidelines, sustained draw should not exceed 80% of the breaker rating — approximately 12A continuous. Plan device loads accordingly, not just outlet count.
Q: What rack form factor does the VA1N1100 fit?
A: The VA1N1100 is a 1U horizontal unit with a 432mm (width) × 457mm (depth) × 44mm (height) footprint, designed for standard 19-inch EIA rack mounting.
Q: What is the operating temperature range of the VA1N1100?
A: The VA1N1100 is rated for 0°C to 60°C operating temperature, covering standard data center environments through warmer IDF closets and light industrial enclosures.
The VA1N1100 is one of those units that does exactly what it says and nothing more — and for a lot of rack builds, that's precisely what you want. The 10x NEMA 5-15R outlet configuration on a single 15A/120V circuit is the right fit for a half-populated 1U-device rack where you need clean, twist-lock-secured power distribution without paying for metering or switching intelligence you'll never use.
Technical Highlights:
- NEMA L5-15P Locking Input: The twist-lock connector is the practical differentiator over standard 5-15P pigtail PDUs — under real cable-management conditions in dense racks, an unsecured input plug is a latent risk. This eliminates that failure mode for all 10 downstream outlets at once.
- 1U Horizontal Form Factor (432 × 457 × 44mm): Fits any standard 19-inch EIA rack without modification. The 457mm depth accommodates most 2-post and 4-post rack depths without overhang.
- 0–60°C Operating Range: Wider than typical data center designs — useful if this PDU is destined for a network closet, warehouse edge node, or any space where HVAC reliability is not guaranteed. No derating is specified within this range based on available evidence.
Deployment Considerations:
- With 10 outlets on a single 15A circuit, real-world load planning is critical. At 12A NEC continuous limit, you're averaging 1.2A per outlet — appropriate for 1U switches and thin servers but tight if any devices draw 2A+ at sustained load. Audit your device nameplates before finalizing outlet count.
- The 'basic upgradeable' transfer switch tier means automatic transfer behavior depends on the upgrade path — verify what the upgraded configuration requires (additional hardware, controller module) before specifying this unit in a redundancy-critical application where failover timing matters.
The VA1N1100 is well-suited for edge IT closets, branch office server racks, and access control head-end cabinets where 10 devices need orderly 120V distribution from a secured locking circuit — and where the upgrade path to transfer switching keeps options open without a forklift hardware change later.
