Vertiv AL4A0NHUGNNXLKB 5KVA/4.5KW 208VAC Three-Phase UPS with Hot-Swap Battery
Overview
The Vertiv AL4A0NHUGNNXLKB is a 5KVA/4.5KW online UPS module designed for data center and critical infrastructure deployments where power continuity is non-negotiable. Operating on a 208VAC three-wire (L-L-G) input and delivering dual-voltage 208/120VAC output, this unit fits directly into existing commercial electrical infrastructure without a step-down transformer. The AL4A0NHUGNNXLKB ships hot-swap capable, meaning battery replacement happens without pulling the load offline — a requirement in any 24/7 environment where maintenance windows don't exist. Part of the Vertiv power protection line, this unit scales to N+1 configurations supporting up to 20kVA/18kW aggregate, so you can grow the protected load without redesigning the power architecture.
Key Features
- 5KVA/4.5KW Output Capacity: Enough headroom to carry a full rack of network video recorders, PoE switches, and access control servers simultaneously — size the load to 80% of nameplate (3.6kW) to stay in the safe operating band and preserve battery life.
- 208VAC Three-Wire (L-L-G) Input: Accepts standard commercial three-phase wiring without requiring a neutral conductor on the input side, which simplifies the panel connection in most data center environments. Output provides both 208VAC (for servers and high-density compute) and 120VAC (for lower-voltage ancillary loads) from a single unit.
- 8-Minute Runtime at Full Load: Sized for orderly shutdown or generator transfer, not extended outages. If your backup generator takes 30–90 seconds to transfer, 8 minutes is substantial margin. For longer hold times, pair with an external battery cabinet from the same Vertiv family.
- N+1 Scalability to 20kVA/18kW: Deploy additional modules to build redundancy into the power path — a single module failure doesn't drop the load. This matters in surveillance and security environments where camera and recorder downtime creates evidence gaps and compliance exposure.
- Up to 92% Efficiency: At 92% efficiency, losses are kept low enough to reduce heat output in the rack — fewer BTUs means lower cooling demand, which compounds into real savings over a 3–5 year deployment cycle versus older 85–88% efficiency UPS designs.
- Hot-Swap Battery Architecture: Replace batteries under load without scheduling downtime. In a critical power protection environment — healthcare, government, financial — this is the difference between planned maintenance and a forced outage.
- 0°C to 40°C Operating Range: Rated for standard conditioned data center and IDF/MDF environments. Not rated for unconditioned spaces — if ambient temps exceed 40°C, derate or relocate the unit.
- 581 lb Installed Weight: At 49" H × 17" W × 34" D, this unit occupies a tower or dedicated rack footprint. Confirm floor load ratings before installation — 581 lbs concentrated on a raised floor tile can exceed 250 lb/sq ft ratings without a supplemental floor support kit.
Integration and Compatibility
The AL4A0NHUGNNXLKB integrates into existing PoE switch and NVR rack builds using standard 208VAC commercial input. The dual-voltage 208/120VAC output means a single UPS can protect both high-voltage server loads and standard 120VAC security appliances in the same rack without separate power conditioning. The N+1 module architecture is designed for parallel installation within the Vertiv product family — verify interoperability with the specific Vertiv UPS frame/cabinet before purchasing additional modules.
Frequently Asked Questions
Q: What is the input wiring configuration for the AL4A0NHUGNNXLKB?
A: The AL4A0NHUGNNXLKB uses a 3-Wire Line-Line-Ground (L-L-G) input at 208VAC. No neutral conductor is required on the input side.
Q: What output voltages does this UPS provide?
A: The unit delivers dual-voltage output: 208VAC and 120VAC. This allows it to power both commercial server-grade equipment and standard 120VAC loads from a single unit.
Q: How long will this UPS run on battery at full load?
A: The AL4A0NHUGNNXLKB provides approximately 8 minutes of runtime at full 5KVA/4.5KW load — sufficient for generator transfer or controlled shutdown sequences.
Q: Can batteries be replaced without powering down the connected load?
A: Yes. The hot-swap battery design allows battery replacement under load, eliminating the need for a maintenance window or load transfer to a secondary UPS.
Q: What is the maximum system capacity when deploying multiple modules?
A: In an N+1 parallel configuration, the system scales to 20kVA/18kW aggregate, providing both redundancy and capacity headroom for growing deployments.
Q: What are the physical space requirements for installation?
A: The unit measures 49 in H × 17 in W × 34 in D and weighs 581 lbs. Verify raised floor load ratings and equipment room doorway clearances before delivery.
The AL4A0NHUGNNXLKB sits in a specific niche: a 5KVA/4.5KW hot-swap module that accepts 208VAC three-wire commercial input and puts out both 208VAC and 120VAC — useful when you're protecting a mixed rack without wanting two separate UPS units. The 92% efficiency ceiling keeps heat dissipation manageable, which matters when this unit is one of several in a high-density IDF.
Technical Highlights:
- Dual-Voltage Output (208/120VAC): One unit protects both high-voltage server loads and 120VAC ancillary devices — eliminates the cost and rack space of a second UPS for mixed-voltage racks.
- N+1 Scalability to 20kVA/18kW: The modular architecture means you're not locked into a single point of failure — add modules to build redundancy into the power path as the protected load grows.
- Hot-Swap Battery: Battery replacement under live load is not a nice-to-have in 24/7 security or surveillance environments — it's the spec that determines whether maintenance requires a change-control window or not.
Deployment Considerations:
- At 581 lbs and 49 inches tall, this is a floor-standing unit — confirm room entry dimensions and raised floor load ratings (250 lb/sq ft is a common limit that this unit can approach or exceed with cabling) before scheduling delivery.
- The 8-minute runtime is designed for generator transfer, not extended outages. If your site lacks a generator, pair this unit with an appropriately sized external battery cabinet from the Vertiv family to extend hold time.
Best fit for data center IDF/MDF rooms and security operations centers running mixed 208/120VAC loads where hot-swap maintenance and N+1 redundancy are hard requirements — not a match for unconditioned spaces or sites exceeding 40°C ambient.
