Inverter & chargers
Quattro - Dual-Input Inverter/Charger for Demanding Off-Grid, Marine, and Backup Power Applications,QUA123020010
Quattro - Dual-Input Inverter/Charger for Demanding Off-Grid, Marine, and Backup Power Applications,QUA123020010
About this product
Similar to the MultiPlus, the Quattro is also a combined inverter and charger. What sets it apart is its ability to accept two AC inputs and automatically connect to the active source. Its many features include a true sine wave inverter, adaptive charging, hybrid PowerAssist technology, plus multiple system integration features such as three-phase, split-phase, and parallel operation. Available in 3000VA, 5000VA, 8000VA, 10000VA, and 15000VA models.
Two AC Inputs - Automatic and Uninterruptible Switching
The Quattro can be connected to two independent AC sources - for example, shore-side power and a generator, or two generators. The Quattro will automatically connect to the active source. AC-in-1 is typically assigned to the generator and AC-in-2 to shore power, though the priority is fully configurable.
When you plug into a pedestal, the Quattro transfers to shore power seamlessly. Fire up the generator and it switches over without you touching anything - no external transfer switch, no relay box, no “why is nothing working” moment late at night.
In the event of a grid failure, or shore or generator power being disconnected, the Quattro takes over the supply to the connected loads within 20 milliseconds or less. This rapid transfer is fast enough that computers, network equipment, and other sensitive electronics continue to operate without disruption - delivering true UPS-grade protection.
Two AC Outputs
The main output has no-break functionality. The Quattro powers connected loads in the event of a grid failure or when shore or generator power is disconnected. This transfer occurs so quickly that computers and other electronic equipment continue to run without disruption.
The second output is live only when AC is available on one of the inputs of the Quattro. Loads that should not discharge the battery - such as air-conditioning or a water heater - can be connected to this output. This allows critical loads to remain powered from the battery during outages while non-essential high-power loads are automatically shed.
Unique PowerAssist Feature
The Quattro will prevent overload of a limited AC source, such as a generator or shore power connection. First, battery charging will automatically be reduced when otherwise an overload would occur (PowerControl function). The second level will boost the output of a generator or shore-side supply with power taken from the battery (PowerAssist function).
Plugged into a weak 30A pedestal but the AC, water heater, and microwave all running? The Quattro adds inverter power from the batteries on top of the shore supply instead of tripping the pedestal breaker - then quietly recharges when the load drops. When the high-power period ends, the charger automatically resumes full charging to restore the battery.
Virtually Unlimited Power Thanks to Parallel Operation
Up to 6 Quattros can operate in parallel to achieve higher power output. Three-phase or split-phase operation is also possible.
Three units can be configured for three-phase output. But that is not all: up to 6 sets of three units can be paralleled per phase, yielding a 75 kW / 90 kVA inverter system with over 1200 Amps of charging capacity. The most important settings - including parallel operation and three-phase operation - can be changed in a very simple manner using Quattro DIP switches, without requiring a computer.
This scalability makes the Quattro suitable for everything from a large RV or boat to off-grid homes and commercial installations.
On-Site Configuration, Monitoring, and Control
Settings can be modified in minutes using VEConfigure software (requiring a computer or laptop and an MK3-USB interface). A wide range of monitoring and control options is available: Cerbo GX, Color Control GX, Venus GX, Octo GX, CANvu GX, laptop, computer, Bluetooth (with the optional VE.Bus Smart Dongle), Battery Monitor, and the Digital Multi Control panel.
Remote Configuration and Monitoring
When coupled with a GX device (e.g., Cerbo GX) you can monitor and control your Quattro and system or systems locally (LAN) or remotely via the internet from anywhere in the world, using the free VRM app and VRM portal website. Access can be from a phone, tablet, laptop, or PC for multiple operating systems. There is no end to the level of control, from adjusting your Quattro to auto-starting a backup generator and more.
Battery Compatibility and Smart Management
The Quattro is compatible with LiFePO₄ lithium batteries as well as various other battery technologies. The VE.Bus BMS connects to the Quattro with a standard RJ45 UTP cable, enabling the BMS to disable inverting in the event of cell under-voltage and to disable charging in the event of over-voltage. A battery temperature sensor is included with 12V and 24V models for temperature-compensated charging.
Comprehensive Protection
The unit incorporates full protection against output short circuits, overload, battery over-voltage, battery under-voltage, over-temperature, AC on inverter output, and excessive input voltage ripple. These safeguards ensure reliable operation under demanding conditions and protect both the unit and connected equipment.
Specifications
Quattro | 48/3000/35-50/50 120V | 12/5000/220-100/100 120V 24/5000/120-100/100 120V 48/5000/70-100/100 120V | 48/10000/140 -100/100 120V |
PowerControl/PowerAssist | Yes | ||
Integrated Transfer switch | Yes | ||
AC inputs (2x) | Input voltage range:90-140VACInput frequency:55-65HzPower factor:1 | ||
Maximum feed through current | 2x 50A | 2x 100A | 2x 100A |
INVERTER | |||
Input voltage range | 9,5-17V 19-33V 38-66V | ||
Output when in inverter mode | Output voltage:120VAC±2% Frequency:60 Hz± 0,1% | ||
Cont. output power at 25C / 77 ℉ (2) | 3000VA | 5000VA | 10000VA |
Cont. output power at 25C/77 ℉ | 2400W | 4000W | 8000W |
Cont. output power at 40C/104℉ | 2200W | 3700W | 6500W |
Cont. output power at 65C/150℉ | 1700W | 3000W | 4500W |
Peak power | 6000W | 10000W | 20000W |
Maximum efficiency | 94% | 94/94/95% | 96% |
Zeroload power | 25W | 30/30/35 W | 60W |
Zero load power in AES mode | 20W | 20/25 / 30 W | 40W |
Zero load power in Search mode | 12W | 10/10/15 W | 15W |
CHARGER | |||
Charge voltage 'absorption' (VDC) | 57,6V | 14,4/ 28,8/ 57,6V | 57,6V |
Charge voltage 'float'(VDC) | 55,2V | 13,8/ 27,6 / 55,2V | 55,2V |
Storage mode (VDC) | 52,8V | 13,2/ 26,4 / 52,8 V | 52,8V |
Charge current house battery (A) 3) | 35A | 200/120/70A | 140A |
Charge current starter battery (A) | 4 A (12V and 24V models only) | ||
Battery temperature sensor | Yes | ||
GENERAL | |||
Auxiliary output( | 32A | 50A | 50A |
Programmable relay | 3x | ||
Protection(1) | a-g | ||
VE.Bus communication port | For parallel, split phase and three phase operation, remote monitoring and system integration | ||
General purpose com. port | 2x | ||
Remote on-off | Yes | ||
Common Characteristics | Operating temp.:-40 to +65℃ Humidity (non-condensing): max.95% | ||
ENCLOSURE | |||
Common Characteristics | Material & Colour: aluminium (blue RAL5012) Protection category:IP 21 | ||
Battery-connection | Four M8 bolts (2 plus and 2 minus connections) | ||
120V AC-connection | Screw terminals 13 mm2 | Bolts M6 | Bolts M6 |
Weight (kg) | 42 lb 19 kg | 75 / 66 / 66 lb 34/ 30/ 30kg | 128lb 58kg |
Dimensions (hxwxd) | 14.3x10.2x8.6 inch | 18,5x 14,0x 11,2 inch 470x 350x280 mm | 22.6x 19,2x 13,6 inch |
STANDARDS | |||
Safety | EN-IEC 60335-1,EN-IEC 60335-2-29,EN-IEC 62109-1,UL 1741 (only for 48V 5kVA and 10kVA) | ||
Emission, Immunity | EN 55014-1,EN 55014-2,EN-IEC 61000-3-2,EN-IEC 61000-3-3,IEC 61000-6-1,IEC 61000-6-2,IEC 61000-6-3 | ||
Road vehicles | 12V and 24V models:ECE R10-5 | ||
Anti-islanding | See our website | ||
1) Protection key; | 2) Non-linear load,crest factor 3:1 | ||
Product Dimension Drawing
Tailored System Solution - Wysher × Victron Energy for Demanding Applications
The Quattro is not a one-size-fits-all device. Its dual AC inputs, ability to parallel up to six units, and models ranging from 3000VA to 15000VA make it the natural choice for installations where power availability, redundancy, and scalability are critical. Typical applications include:
Large recreational vehicles (Class A motorhomes, big fifth-wheels, and toy haulers) that run a generator alongside shore power, with automatic failover and seamless transfer. The 5000VA model handles one AC plus a residential fridge and outlets; the 8000-10000VA models in 48V are suited to full-residential loads including two air conditioners, induction cooking, and a washer-dryer.
Off-grid homes and remote cabins that need to switch between a backup generator and a limited utility feed, while maximising solar self-consumption through integrated MPPT chargers.
Marine installations on yachts and workboats, where dual shore cords or a generator-plus-shore setup are common, and reliable UPS-grade transfer is essential for navigation and communication equipment.
Backup power systems for workshops, small businesses, or telecom shelters, where UPS-grade transfer and the ability to parallel multiple units for scalable capacity are essential.
Based on the Victron Energy architecture, Wysher integrates Quattro inverter/chargers with LiFePO₄ battery banks, MPPT solar charge controllers, and GX monitoring devices to deliver a complete, intelligent energy solution. Through careful system engineering, we ensure:
✓ Seamless automatic switching between AC sources, leveraging the Quattro’s dual-input design
✓ Dynamic load sharing via PowerAssist to prevent source overload
✓ Optimised battery charging with temperature compensation and BMS communication
✓ Scalability from a single unit to parallel or three-phase configurations as needs grow
✓ Full remote visibility and control via VRM, enabling proactive management and generator auto-start
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