Victron Energy Quattro 48/3000/35-50/50 120V VE.Bus Inverter/Charger – QUA483021100

Product Overview

The Victron Energy Quattro 48/3000/35-50/50 120V VE.Bus is a versatile inverter/charger designed for 48V battery systems in marine, mobile, off-grid and backup-power applications. Combining a pure sine wave inverter, an intelligent battery charger and an automatic transfer switch, it provides an integrated solution for converting battery power into AC electricity while managing external power sources.

With a 3,000VA inverter capacity, 35A battery charger and two independent 50A AC inputs, the Quattro offers flexible power management for installations that use more than one external supply. It can automatically select an available AC source, such as shore power or a generator, and switch to battery-powered inverter operation when external power is unavailable.

Pure Sine Wave Inverter Performance

The integrated inverter converts 48V DC battery power into a stable 120V AC pure sine wave output. This makes it suitable for many compatible appliances, electronics and electrical equipment, provided their power requirements fall within the unit's operating limits.

The inverter is rated at 3,000VA, with continuous active power output of 2,400W at 25°C. Available output reduces as operating temperature rises, with approximately 2,200W at 40°C and 1,700W at 65°C. Peak power is rated at 6,000W for short-duration demands.

The 48V battery configuration helps keep DC current lower than comparable lower-voltage systems at similar power levels. Correctly sized battery capacity, suitable cabling and appropriate DC protection are essential for dependable operation.

Two Independent AC Inputs

One of the main features of the Quattro is its ability to connect to two independent AC sources. For example, a boat can use shore power as one source and a generator as the other.

The Quattro automatically selects an available source according to its configured priorities and operating conditions. Its integrated transfer switch manages the changeover between incoming AC power and inverter operation, reducing the need for separate external switching equipment.

Each AC input supports a maximum feed-through current of 50A. The incoming supplies and connected electrical circuits must be designed to remain within the manufacturer's ratings.

Integrated 35A Battery Charger

The built-in battery charger provides up to 35A of charging current under the specified operating conditions. When connected to a suitable AC source, the Quattro can supply connected loads while recharging the 48V battery bank.

Victron's adaptive charging technology helps manage the charging process through the appropriate charging stages. Correct configuration for the installed battery chemistry and the battery manufacturer's recommended charging parameters is essential for safe and effective operation.

PowerControl and PowerAssist

PowerControl helps prevent a limited AC source from being overloaded by allowing the maximum current drawn from that source to be configured. This is useful when operating from a generator or shore-power connection with restricted capacity.

PowerAssist can supplement the available external AC supply with power from the battery when demand temporarily exceeds the configured input-current limit. This allows the system to accommodate short periods of higher demand without relying entirely on the incoming source.

Together, these functions help manage electrical loads and make better use of the power available from batteries and external supplies.

Auxiliary AC Output

The Quattro includes an auxiliary AC output rated for loads up to 25A. This output is designed to switch off when the unit is operating in inverter mode, allowing selected loads to be supplied only when external AC power is available.

This can be useful for appliances that should operate only when shore power or a generator is supplying the system. The auxiliary output must be configured and installed in accordance with the manufacturer's instructions.

VE.Bus System Integration

The VE.Bus communication interface supports configuration and integration with compatible Victron equipment. Depending on the system design, the Quattro can be configured for parallel operation, three-phase systems and suitable energy storage applications.

Compatible monitoring and control equipment can provide information about system operation and allow installers to configure the unit for the application. These features make the Quattro suitable for both standalone installations and more extensive power systems.

Applications

The Victron Energy Quattro 48/3000/35-50/50 120V is suited to compatible marine electrical systems, boats using 120V AC equipment, off-grid properties, remote installations and backup-power systems built around 48V batteries.

Its dual AC inputs make it particularly useful where two power sources are available, such as shore power and a generator. The combination of inverter, charger and transfer switching also helps simplify system design by integrating several functions into one unit.

Important: This model provides 120V AC output and is intended for compatible electrical systems. It is not a direct substitute for a 230V model typically used in UK and European installations.

Technical Specifications

Product name: Victron Energy Quattro 48/3000/35-50/50 120V VE.Bus.

Product code: QUA483021100.

Product type: Inverter/charger with integrated transfer switch.

Nominal battery voltage: 48V DC.

DC input voltage range: 38–66V.

Inverter capacity: 3,000VA.

Continuous active power at 25°C: 2,400W.

Continuous active power at 40°C: 2,200W.

Continuous active power at 65°C: 1,700W.

Peak power: 6,000W.

AC output voltage: 120V AC.

Output frequency: 60Hz, adjustable to 50Hz where supported.

Number of AC inputs: Two independent inputs.

Maximum AC feed-through current: 50A per input.

Maximum battery charging current: 35A.

Auxiliary AC output: Up to 25A; switches off during inverter operation.

Maximum inverter efficiency: Approximately 94%.

Protection rating: IP21.

Communication interface: VE.Bus.

Dimensions: Approximately 362 × 258 × 218mm (height × width × depth).

Weight: Approximately 19kg.

Key functions: Pure sine wave inversion, adaptive battery charging, PowerControl, PowerAssist, automatic AC source selection and transfer switching.

Installation and Compatibility

The Quattro must be installed in accordance with Victron's instructions and applicable electrical regulations. Confirm that the battery bank is suitable for a 48V system and can provide the current required by the inverter under expected operating conditions.

The installation should include correctly rated DC cables, suitable battery-side overcurrent protection, appropriate AC circuit protection, proper earthing and adequate ventilation. Both incoming AC supplies must be correctly protected and configured, and connected loads must remain within the unit's ratings.

Battery charging settings must match the installed battery type. Parallel or three-phase systems require compatible equipment and correct configuration. Professional installation and commissioning are recommended, particularly for marine, commercial and permanently wired electrical systems.

Before purchasing, confirm that the 120V AC output and the dual-input arrangement meet the requirements of your installation.

Product Summary

The Victron Energy Quattro 48/3000/35-50/50 120V VE.Bus combines a 3,000VA pure sine wave inverter, 35A battery charger and automatic transfer switch in one integrated unit. Its two independent 50A AC inputs, PowerControl and PowerAssist make it a flexible choice for compatible 48V power systems that need to manage multiple external AC sources.