Victron Quattro 48/15000/200-100/100 230V VE.Bus Inverter Charger — QUA483150000

The Victron Quattro 48/15000/200-100/100 is a 15kVA inverter charger designed for demanding off-grid, backup and hybrid power installations. It accepts two independent AC inputs, making it suitable for sites with both a generator and a grid or shore power connection. At 48V DC input and 230V AC output, it is built for large residential, commercial and marine applications where high continuous power and reliable automatic transfer are essential.

Key Features

• 15,000VA (15kVA) continuous inverter output at 230V AC, 50Hz, from a 48V DC battery bank.
• Dual AC inputs allow simultaneous connection of two separate AC sources, such as a generator and grid supply, with automatic source selection and transfer.
• 200A battery charger built in, with adaptive charging algorithm to suit flooded, gel, AGM and lithium battery chemistries.
• Two independent 100A AC pass-through outputs, enabling load management and critical load separation without additional switchgear.
• VE.Bus communication interface for system integration with Victron GX devices, enabling remote monitoring, parallel operation and multi-phase configuration.
• PowerControl and PowerAssist functions limit generator or shore power draw and supplement from the battery when demand exceeds the available AC input current.
• Supports parallel and three-phase configurations: up to six units can be combined for higher power or three-phase output.
• Programmable relay outputs for generator start/stop control and custom system logic.

Product Overview

The Quattro range sits above the MultiPlus in Victron's inverter charger lineup by virtue of its dual AC input capability. Where a MultiPlus accepts one AC source, the Quattro manages two independently, with automatic priority selection. In practice, this means a site can have grid or shore power on AC input 1 and a generator on AC input 2. The unit switches between them automatically based on availability and programmed priority, without any manual intervention or external transfer switch for most configurations.

The 200A charger is substantial for a unit of this class. Charge current is programmable, and the adaptive algorithm adjusts the charge profile based on battery behaviour rather than applying a fixed curve. This matters for mixed or ageing battery banks where a rigid profile can cause undercharging or stress. The 48V nominal voltage suits larger battery banks where lower current at equivalent power reduces cable losses and heat.

VE.Bus connectivity is central to how this unit integrates into a wider system. Connected to a Victron Cerbo GX or similar GX device, the Quattro reports state, alarms and metering data to the VRM portal. Multiple units can be configured in parallel for up to 90kVA, or in split three-phase arrangements, all managed through VEConfigure software. This scalability makes the Quattro 15kVA a practical choice for commercial sites, large off-grid properties and critical backup installations where a single unit may not be sufficient long-term.

Technical Specifications

Applications

• Large off-grid residential or farm installations requiring high continuous AC power from a 48V battery bank.
• Critical backup systems where both grid and generator are available as AC sources and automatic transfer is required.
• Marine and shore power applications with dual AC input for generator and shore supply management.
• Commercial sites needing scalable power, using multiple units in parallel or three-phase configuration via VE.Bus.
• Hybrid solar systems integrated with a Victron GX device for full monitoring and energy management.
• Generator-assisted off-grid systems where PowerAssist reduces generator runtime by supplementing from battery during peak demand.

What Is Included

• Victron Quattro 48/15000/200-100/100 230V VE.Bus inverter charger unit

Installation Notes

At 72kg, the Quattro 15kVA requires two people and appropriate lifting equipment for safe positioning. Installation must be carried out by a qualified electrician with experience in inverter charger systems. For any grid-connected application in the UK, the installation must comply with G98 or G99 requirements as applicable, and the relevant Distribution Network Operator must be notified. High-current DC cabling between the battery bank and the unit must be correctly rated and fused. VEConfigure software is required for commissioning, parallel setup and three-phase configuration. Victron recommends using a Victron GX device for full system monitoring and control.