The Victron Energy Quattro-II 12/3000/120-50/50 2x120V is a versatile inverter and charger designed for standard North American 50A 120/240VAC split-phase applications. It can handle two AC inputs and automatically connects to the active source.

Whether receiving power from shore power or a generator, the Quattro-II 2x120V accepts and passes through both lines of a 120/240V supply, utilizing the full 50A for charging and AC loads. When connected to a single-phase 120V supply, the L1 input accepts incoming power for charging and passthrough while combining the L1 and L2 outputs for single-phase 120V on each line.

The Quattro switches to inverter operation when no AC sources are available, providing a 120V single-phase output. In inverter mode, the Quattro-II 2x120V internally connects both lines L1 and L2 to supply 120VAC to loads on either output. In all connection scenarios, both sides of a distribution panel receive 120V. However, 240VAC is only available when the Quattro is supplied by a split-phase 120/240VAC source, preventing heavy loads from discharging the battery.

With features such as PowerControl, PowerAssist, Input Current Limit, two AC outputs, and support for parallel and 3-phase configurations, the Quattro-II 2x120V is suitable for LiFePO4 batteries and various battery technologies.

Unlock virtually unlimited power through parallel and three-phase operation. Up to 6 Quattros can operate in parallel for increased power output. Additionally, three units of the same model can be configured for three-phase output, with L2 disabled in multi-phase setups.
 
PowerControl and PowerAssist - Boosting the capacity of the grid or a generator
Two AC inputs and two AC outputs 
Virtually unlimited power thanks to parallel and three-phase operation
On-site system configuring, monitoring and control  
Remote configuring and monitoring 
DC Input voltage range: 9.5 – 17 V 
Transfer switch: 50 A
Brand: Victron Energy
Cont. output power at 25°C: 3000 VA
Maximum apparent feed-in power: 2500 VA
Depth-1: 7 inches
Height-1: 23 inches
Peak power: 5500 W
Width-1: 13 inches