Victron Energy Quattro-II 12/3000/120-50/50 2x120V Inverter/Charger – QUA122305130

Product Overview

The Victron Energy Quattro-II 12/3000/120-50/50 2x120V is a high-performance inverter/charger designed for 12V battery systems requiring flexible AC power management. It combines a pure sine wave inverter, a 120A battery charger, two independent AC inputs and two AC outputs in one integrated unit.

Designed for compatible North American electrical installations, the Quattro-II can automatically select between two available AC power sources, such as shore power and a generator. When external AC power is unavailable, it converts DC battery power into AC electricity to supply compatible connected loads.

With its 3000VA inverter capacity, 50A transfer switching and VE.Bus communication, the Quattro-II is suited to demanding marine, recreational vehicle, mobile and off-grid applications requiring reliable power conversion and automatic source switching.

Applications and Usage

The Quattro-II 12/3000/120-50/50 is designed for 12V battery systems where multiple AC sources and automatic power management are important. Typical applications include boats, motorhomes, recreational vehicles, cabins, backup power installations and off-grid systems designed for North American 120V and 240V electrical standards.

Its dual AC inputs allow two suitable sources to be connected, with the unit automatically selecting the active source according to its configuration and operating conditions. This can simplify installations using both shore power and a generator.

The two AC outputs allow connected loads to be arranged according to their power requirements. The main output is supported by inverter operation, while the second output is intended for loads that should receive power only when an appropriate external AC source is available.

Important: This is a 2x120V model intended for compatible North American electrical systems. It is not the standard 230V AC model commonly used in the UK. Confirm the required voltage, frequency and supply arrangement before purchasing.

Pure Sine Wave Inverter

The integrated inverter converts 12V DC battery power into a pure sine wave AC output suitable for a wide range of compatible appliances and electronic equipment. It provides a nominal output rating of 3000VA, equivalent to 2400W of continuous active power at 25°C.

Continuous active power is approximately 2200W at 40°C and 1700W at 65°C. Peak power capability reaches 5500W, subject to operating conditions and the characteristics of the connected load.

The inverter operates from a nominal 12V DC battery supply, with an input voltage range of approximately 9.5–17V DC. Correct battery capacity, cable sizing and DC protection are particularly important because substantial current can be drawn from a 12V battery bank at higher AC loads.

Adaptive 120A Battery Charger

The built-in adaptive battery charger delivers up to 120A of charging current to a compatible 12V battery bank. Its multi-stage charging process supports efficient battery charging and can be configured for compatible battery technologies.

When connected to a suitable external AC source, the Quattro-II can supply connected loads while recharging the battery bank. Charging settings must be matched to the battery chemistry and the battery manufacturer's specifications.

The installation must provide sufficient battery capacity, correctly sized conductors and appropriate overcurrent protection. Actual charging current depends on the available AC supply, system configuration and operating conditions.

Dual AC Inputs and Automatic Source Selection

The Quattro-II has two independent AC inputs, allowing connection to two suitable sources, such as shore power and a generator. It automatically selects an available source according to its configuration and operating conditions.

The integrated transfer switch is rated at 50A. This automatic source selection helps reduce the need for separate external switching equipment and supports flexible power management in mobile and marine installations.

Two AC Outputs

The main AC output supplies compatible loads when external AC power is available and continues supplying supported loads when the unit operates in inverter mode.

The second AC output is designed for loads that should only receive power when external AC input is available. This is useful for separating loads that should not discharge the battery when the installation is running from inverter power.

The distribution arrangement must be designed around the unit's ratings and the requirements of the connected appliances.

120V and 240V Split-Phase Capability

The Quattro-II 2x120V is designed for compatible North American electrical systems. When supplied from an appropriate 120/240V split-phase source, the system can pass through the supply to compatible loads, including suitable 240V equipment.

When operating from battery power, the inverter supplies 120V AC output. A 240V supply should not be assumed to be available from the inverter alone; it depends on the external split-phase source and the correct system arrangement.

This configuration is useful for installations where both standard 120V circuits and selected 240V loads must be supported.

PowerControl and PowerAssist

PowerControl helps manage the current drawn from a limited external AC source by adjusting battery charging current to leave more available capacity for connected loads.

PowerAssist can supplement a limited external AC supply with battery power through the inverter when demand temporarily exceeds the configured input limit. This can help accommodate short periods of higher power demand without requiring a larger generator or shore-power connection.

The availability and configuration of these functions depend on the input connection and system setup. The manufacturer's instructions should be followed when configuring current limits and power assistance.

VE.Bus Communication and System Integration

The VE.Bus communication interface enables the Quattro-II to communicate with compatible Victron Energy equipment. With suitable accessories and configuration, it can be integrated into systems supporting remote monitoring, control and advanced power management.

Compatible units can be configured for parallel and supported three-phase arrangements, subject to the manufacturer's requirements. A compatible GX device can provide centralised system monitoring and access to remote monitoring services.

Technical Specifications

Manufacturer: Victron Energy

Product model: Quattro-II 12/3000/120-50/50 2x120V

Manufacturer part number: QUA122305130

Product type: Inverter/charger

Nominal battery voltage: 12V DC

DC input voltage range: 9.5–17V DC

Inverter rating: 3000VA

Continuous active power at 25°C: 2400W

Continuous active power at 40°C: 2200W

Continuous active power at 65°C: 1700W

Peak power: 5500W

Inverter output: Dual 120V AC configuration

Output voltage in inverter mode: 120V AC ±2%

Output frequency: 60Hz ±0.1%

Maximum battery charging current: 120A

Number of AC inputs: 2

Number of AC outputs: 2

AC transfer switch: 50A

Maximum AC input current: 50A per leg

Maximum efficiency: Approximately 93%

Zero-load power consumption: Approximately 15W

Protection rating: IP22

Communication interface: VE.Bus, with two RJ45 communication terminals

Battery connections: M8 bolts, two positive and two negative connections

AC connections: Screw terminals, up to 21mm²

Dimensions (H × W × D): Approximately 579 × 319 × 168mm

Weight: Approximately 32.8kg

Installation and Compatibility

The Quattro-II 12/3000/120-50/50 is designed for compatible 12V battery systems and North American 120V/240V electrical installations. Before installation, confirm battery chemistry, charging requirements, AC input arrangements, connected loads and the requirements of the electrical distribution system.

The unit should be installed in a dry, adequately ventilated location with sufficient clearance for cooling and servicing. Battery cables, fuses, AC circuit protection, earthing arrangements and conductor sizes must comply with the manufacturer's instructions and applicable electrical regulations.

Because a 12V inverter can draw substantial DC current under heavy loads, the battery bank and DC wiring must be designed to support the expected current safely. Split-phase installations should be designed and commissioned by a suitably qualified professional familiar with the relevant electrical standards.

Product Summary

The Victron Energy Quattro-II 12/3000/120-50/50 2x120V (QUA122305130) combines a 3000VA pure sine wave inverter, 120A battery charger, two AC inputs and two AC outputs in one integrated unit. With automatic source selection, a 50A transfer switch and VE.Bus communication, it provides flexible power conversion and battery charging for compatible North American marine, mobile, backup and off-grid installations.