Victron Quattro-II 24/3000 70-50/50 2x120V Marine Inverter/Charger - Professional Dual AC Input Power System
Advanced Split-Phase Inverter/Charger with Dual AC Input
Experience ultimate marine power system flexibility with the Victron Quattro-II 24/3000 70-50/50 2x120V Inverter/Charger, a professional-grade power management system designed specifically for North American 50A 120/240VAC split-phase applications. This sophisticated unit combines a powerful 3000VA inverter, 70-amp battery charger, and automatic dual AC input switching in a single, compact package engineered for demanding marine environments.
Built upon Victron's legendary reliability and advanced power electronics, this Quattro-II model features innovative PowerControl and PowerAssist technologies that intelligently manage multiple power sources, prevent generator overload, and provide seamless power transfer with less than 18-millisecond switching for uninterrupted operation of critical electronics and systems.
Advanced Power Management Features
Dual AC Input Intelligence
- Automatic Source Selection: Intelligently connects to active AC source from shore power or generator
- Split-Phase Compatibility: Handles both 120/240V and 120V single-phase input sources
- No-Break Power Transfer: Less than 18ms transfer time ensures uninterrupted electronics operation
- Auxiliary Output: Secondary output active only when AC input is present, protecting battery from non-essential loads
PowerControl & PowerAssist Technology
- Generator Protection: Prevents overload by intelligently managing AC current draw and battery charging
- Peak Power Boost: Supplements limited AC power with battery power during high-demand periods
- Intelligent Load Management: Automatically prioritizes essential loads and optimizes power distribution
- 50-Amp Transfer Switch: Heavy-duty switching capacity handles substantial marine electrical loads
Technical Specifications
Inverter Performance
| Continuous Power (25°C): | 3000 VA / 2400 W |
| Continuous Power (40°C): | 2200 W |
| Continuous Power (65°C): | 1700 W |
| Peak Power: | 5500 W |
| Maximum Efficiency: | 94% |
| DC Input Range: | 19-33 VDC (24V nominal) |
AC Input/Output Configuration
| AC Input (Split-phase): | 180-280 VAC, 45-65 Hz |
| AC Input (Single-phase): | 90-140 VAC, 45-65 Hz |
| Inverter Output: | 120 VAC ±2%, 60 Hz ±0.1% |
| Maximum AC Input Current: | 50A per leg |
| Transfer Switch Rating: | 50A |
Battery Charging System
| Maximum Charge Current: | 70 Amps |
| Absorption Voltage: | 28.8 VDC |
| Float Voltage: | 27.6 VDC |
| Storage Mode: | 26.4 VDC |
| Temperature Compensation: | Integrated battery temperature sensor |
Intelligent Power Management Systems
PowerControl Technology
The advanced PowerControl system prevents AC source overload by intelligently monitoring total current draw and automatically adjusting battery charging current to stay within preset limits. This feature protects generators from overload while ensuring optimal battery charging when AC power is available, extending generator life and improving fuel efficiency.
PowerAssist Peak Power Support
PowerAssist technology revolutionizes marine power management by supplementing limited AC power with battery power during peak demand periods. When loads exceed available AC capacity, the Quattro-II seamlessly adds battery power to meet demand, then automatically recharges the battery when loads decrease. This enables smaller generators to handle larger loads efficiently.
Split-Phase Operation Benefits
- 240V Load Protection: Prevents heavy 240V loads from discharging battery when only inverter power is available
- Balanced Load Distribution: Intelligent load management across both 120V legs for optimal power distribution
- Generator Compatibility: Works with both split-phase and single-phase AC sources automatically
- Shore Power Integration: Seamless integration with marina shore power systems
Installation & System Integration
Parallel & Three-Phase Capability
The Quattro-II supports virtually unlimited power expansion through parallel operation of up to 6 units for higher power output, or three-phase configuration using three identical units. This scalability makes it ideal for large yachts, commercial vessels, or complex marine installations requiring substantial electrical capacity.
Advanced Connectivity Options
Multiple communication and control options provide comprehensive system monitoring and management. VE.Bus communication enables system integration, while dual general-purpose communication ports support battery management systems and other marine electronics integration.
Remote Monitoring & Control
- VictronConnect App: Bluetooth connectivity with optional VE.Bus Smart dongle for mobile device configuration
- Cerbo GX Integration: Complete system monitoring and internet connectivity for remote access
- VRM Portal: Free cloud-based monitoring and control via Victron Remote Management
- Digital Multi Control: Local control panel for convenient system operation
Marine-Grade Construction & Protection
Environmental Protection
Engineered for harsh marine environments, the Quattro-II features IP22 protection rating, corrosion-resistant steel enclosure with marine-grade blue RAL 5012 finish, and operates reliably in temperatures from -40°C to +65°C with fan-assisted cooling for consistent performance in extreme conditions.
Comprehensive Safety Systems
Multiple protection systems ensure safe operation including output short circuit protection, overload protection, battery voltage monitoring, temperature protection, and input voltage ripple monitoring. These systems work together to protect both the unit and connected equipment from electrical faults and environmental hazards.
Professional Installation Features
- Heavy-Duty Connections: M8 bolt battery connections and 21mm² (4 AWG) AC screw terminals
- Compact Design: 579 x 319 x 168 mm (23" x 13" x 7") footprint optimizes installation space
- Programmable Relay: Configurable for alarm functions, generator start/stop, or system control
- Standards Compliance: Meets rigorous EN-IEC safety and EMC standards for marine applications
Energy Efficiency & Battery Management
Advanced Power Modes
Multiple power-saving modes optimize energy consumption based on operational requirements. AES (Automatic Economy Switch) mode reduces standby power to 8W, while Search mode minimizes consumption to just 4W when no loads are present, extending battery life during periods of minimal power demand.
Intelligent Battery Charging
The sophisticated 4-stage charging algorithm optimizes battery life and performance across all battery types. Temperature compensation ensures optimal charging in varying environmental conditions, while the 70-amp charging capacity provides rapid battery recovery for extended operating time.
Marine Applications
Large Recreational Vessels
- Motor yachts requiring comprehensive AC power management
- Sailing yachts with substantial electrical systems and generator backup
- Trawler yachts needing reliable shore power and inverter operation
- Sportfishing boats with high-power electronics and refrigeration systems
Commercial Marine Applications
- Charter vessels requiring professional-grade power management
- Work boats with substantial electrical demands and dual power sources
- Research vessels needing reliable power for scientific equipment
- Commercial fishing boats with refrigeration and processing equipment
Off-Grid Marine Installations
- Remote marine facilities requiring autonomous power management
- Marine construction projects with temporary power requirements
- Floating facilities needing reliable backup power systems
- Emergency response vessels requiring uninterrupted power systems
Frequently Asked Questions
How does the dual AC input system work in marine applications?
The Quattro-II automatically switches between two AC sources (such as shore power and generator) based on availability and priority settings. When AC power is present, it feeds through to loads while charging batteries. When AC power fails, it switches to inverter mode in less than 18 milliseconds for uninterrupted operation.
What is PowerAssist and how does it benefit marine installations?
PowerAssist supplements limited AC power with battery power during peak demand, allowing smaller generators to handle larger loads. This reduces generator size requirements, improves fuel efficiency, and prevents generator overload while ensuring all equipment receives adequate power during high-demand periods.
Can this unit handle both 120V and 240V loads simultaneously?
Yes, when connected to a split-phase AC source, the unit provides both 120V and 240V output. However, in inverter mode, only 120V output is available, and 240V loads are automatically disconnected to prevent battery discharge from high-power equipment like water heaters or air conditioners.
What battery types are compatible with the Quattro-II?
The Quattro-II is compatible with most 24V battery types including flooded lead-acid, AGM, gel, and lithium batteries. The charging algorithm is programmable for different battery chemistries, and it includes temperature compensation for optimal charging performance. Communication with lithium battery management systems is supported.
How can I monitor and control the system remotely?
Remote monitoring is available through the Cerbo GX system with internet connectivity, providing access via Victron's free VRM portal. You can also use the VictronConnect app with optional VE.Bus Smart dongle for Bluetooth connectivity, or various Victron monitoring panels for local control and display.
Can multiple units be connected for higher power output?
Yes, up to 6 Quattro-II units can operate in parallel for increased power output, or three units can be configured for three-phase output. This scalability makes the system suitable for large vessels or commercial applications requiring substantial electrical capacity with redundancy.
Professional Marine Power System Excellence
The Victron Quattro-II 24/3000 70-50/50 2x120V represents the pinnacle of marine power system technology, combining advanced inverter performance, intelligent battery charging, and sophisticated power management in a single, robust unit. This professional-grade system delivers the reliability, flexibility, and advanced features that serious mariners demand for comprehensive electrical power management.
Invest in proven power system excellence. Choose the Victron Quattro-II for advanced marine power management that provides uninterrupted operation, intelligent load management, and the reliability that defines professional marine electrical systems.