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A transformer-based inverter-charger with a built-in transfer switch, the Victron Quattro 24/5000/120-100/100 manages two AC inputs and two AC outputs from one unit. It suits heavy loads in homes, off-grid cabins, boats, and RVs where grid, generator, and battery power all need to work together.
Planning a system? Read our guide: How to size a battery backup system for your home.
24V systems in grid-tied homes, off-grid cabins, boats, and RVs that need a critical-load output kept on at all times.
About the Victron Quattro 24/5000/120-100/100 120V VE.Bus The Victron Quattro 5kVA is a transformer-based inverter-charger and transfer switch with grid interactive capability. It is ideal for heavy power needs like portable power stations, boats and yachts, grid-tied homes, off-grid cabins, and recreational vehicles. Whether the installation is in a house, boat, or RV, Victron’s dedication to quality is evident in the materials used and in the ever-growing list of features and firmware updates. Dual AC Inputs and Outputs with an Automatic Transfer Switch The transfer switch features two isolated AC inputs and two AC outputs. The unit automatically switches between grid or shore power, generator, and inverter, based on which source is available. Both AC inputs are monitored for power loss, and the transfer switch reacts quickly so devices like computers and network equipment remain powered at all times. AC-Out one is for critical loads that should remain running at all times. By default, AC-Out two turns on when AC input is available, but can be reprogrammed to turn on and off loads at opportune times. This inverter charges batteries up to 120Adc from AC inputs such as shore power or generators, and it can utilize the battery’s stored energy to power loads up to 5,000VA (4,000W) continuously, like a fully functioning kitchen or an EV charger. PowerAssist and PowerControl The inverter provides a pure sine wave output and 10kW peak capacity because of the low-frequency topology. For larger loads, the PowerAssist and PowerControl functions adjust charge current, and additional incoming AC power with inverted power. They mitigate the chances of overloading an incoming AC connection. When incoming power is more than the loads consume, PowerAssist automatically diverts extra AC power to battery charging. Dynamic Neutral-Ground Bond and Other Relays In any system with multiple AC inputs, it’s crucial to prevent multiple connections between neutral and ground. To address this, the Quattro features a dynamic neutral-ground bonding relay that automatically connects the AC neutral output terminal to ground while operating in inverter mode and releasing this bond when powering loads from an external source. This design ensures that two neutral-to-ground connections do not occur simultaneously, preventing electrical shock hazards and tripping GFCIs. Multiple programmable control outputs can be utilized to trigger external equipment and accessories such as auto-starting a generator (2-wire signal), turning on fans, diversion loads, or lights. Three programmable relays (NO/NC) and an external ground relay connection are available. An input is also available to remotely turn on or shut down the inverter. Power Connections Two pairs of M8 battery connection terminals are provided to connect DC power from a battery bank. Use pre-crimped 4/0 AWG inverter power cables with 5/16″ ring terminals for this connection. The AC input and output connections are M6 (~1/4″) brass studs for increased conductivity. Use a set of mechanical lugs to transition from the stud to standard wire. Programming the Inverter Programming the inverter is accomplished by connecting a MK3-USB dongle to a computer. VictronConnect is used for basic programming and monitoring, or VEConfig for configuring advanced functions such as Aux relay output, grid-tie functionality, and more. Fine tune and monitor the system by adding a Cerbo-GX to connect the system to Victron’s Remote Monitoring (VRM) platform.
Warranty terms mentioned in this description are the manufacturer’s. Our own coverage is the 30-day limited warranty.
We confirm compatibility, installation requirements, and delivery details with you during order review, before any payment. Home electrical work may require a qualified installer.
Ask our team to help size the Quattro 5kVA against your loads and battery bank. Message our team on WhatsApp.
Victron Energy
Unlike the 120V models in this range, this MultiPlus-II outputs 230V AC from a 24V battery bank at 5,000VA. It includes a 120A battery charger and 50A AC transfer capability, and works with all battery types including lithium.
$1,637.44
Victron Energy
Here is the 48V version of the Quattro 5kVA, with a 70A charger and UL 1741 certification for grid-interactive systems. It combines an inverter, charger, and dual-input transfer switch, and suits homes, off-grid cabins, boats, and RVs running a 48V battery bank.
$1,428.00
Victron Energy
The Quattro 48V 10kVA is a UL 1741 certified inverter-charger and transfer switch for homes, tiny homes, and off-grid cabins with large 48V battery banks. Two AC inputs, a 140A charger, and 20kW peak capacity make it a strong core for a high-demand system.
$2,213.40
Victron Energy
Like the MultiPlus, the Victron Quattro 48/10000/140-100/100 120V is a combined inverter and charger, but it adds a second AC input. It connects automatically to whichever source is active, such as shore power and a generator, and carries a UL listing.
$2,213.40