VICTRON ENERGY ▶ MULTIPLUS-II SERIES Victron MultiPlus-II 5000VA 24V Inverter/Charger Model 24/5000/120-50 230V | Pure Sine Wave | 120A Adaptive Charger The Victron MultiPlus-II 24/5000/120-50 230V is a sophisticated all-in-one power solution, intelligently combining a powerful 5000VA (4000W) pure sine wave inverter, a robust 120A adaptive battery charger, and a high-speed 50A AC transfer switch into a single, compact unit. This 24V inverter/charger is engineered for reliability and efficiency, making it an ideal choice for a wide range of applications, from off-grid solar systems to marine, vehicle, and backup power setups. Designed to simplify complex power systems, the MultiPlus-II reduces cabling and installation complexity compared to using separate components. Its pure sine wave output ensures compatibility with sensitive electronics, while the adaptive charging technology optimises battery health and longevity. INTEGRATED POWER: Combines inverter, charger, and transfer switch for compact, efficient energy management in 24V systems. Key Features ▶ Pure Sine Wave Output — Ensures compatibility with all appliances, including sensitive electronics. ▶ 5000VA / 4000W Continuous Power — Capable of running a wide range of household and professional equipment. ▶ 120A Adaptive Battery Charger — Optimises charging for 24V batteries, extending their lifespan. ▶ 50A High-Speed AC Transfer Switch — Provides uninterruptible power supply (UPS) functionality in under 20ms. ▶ PowerControl & PowerAssist — Prevents AC input overload and boosts generator/shore power with battery energy. ▶ Parallel & 3-Phase Operation — Expandable up to 6 units for higher power output or three-phase systems. ▶ Programmable Relay — Configurable for various applications, such as generator start/stop or alarm signals. ▶ Remote Monitoring & Control — Via GX devices and VRM portal/app for global system management. Technical Specifications Parameter Value Inverter Input Voltage Range 19 - 33 VDC Output Voltage & Frequency 230 VAC ± 2% @ 50Hz ± 0.1% Continuous Output Power (25°C) 5000 VA (4000W) Peak Power 9000W Maximum Efficiency 96% Zero-Load Power 18W AC Input Voltage Range (Charger) 187 - 265 VAC (45 - 65 Hz) Charge Voltage 'Absorption' 28.8V Charge Voltage 'Float' 27.6V Storage Mode Voltage 26.4V Charge Current House Battery 120A Transfer Switch 50A Auxiliary AC Output Yes (32A) External AC Current Sensor (Optional) 50A or 100A Operating Temperature Range -40 to +65 °C Protection Category IP22 Battery Connection M8 bolts 230 VAC Connection Screw terminals 13mm² (6 AWG) Weight 30kg Dimensions (H x W x D) 607 x 330 x 149 mm Charging & Output Modes Feature Description PowerControl Limits the maximum AC input current drawn, prioritising AC loads and using surplus for battery charging to prevent overload. PowerAssist Supplements limited AC sources (e.g., generator, shore power) with battery power during peak demand, then recharges batteries when loads decrease. Auxiliary AC Output (AC-out-2) Provides power for non-critical loads that should only operate when AC input is available, disconnecting during battery operation. Adaptive 4-Stage Charging Features Bulk, Absorption, Float, and Storage modes, automatically adapting to battery usage for optimal health. Storage Mode Reduces float voltage to minimise gassing and corrosion during periods of inactivity, with a weekly equalisation charge. Temperature Compensation Adjusts charging voltage based on battery temperature (sensor supplied) to prevent overcharging, especially for maintenance-free batteries. Typical Applications Application Description Off-Grid Solar Systems Provides reliable AC power and efficient battery charging for remote homes, cabins, and standalone installations. Marine & Vehicle Systems Ideal for yachts, boats, and RVs, offering seamless power conversion and battery management from shore power or generator. Backup Power Solutions Ensures uninterrupted power during grid failures, automatically switching to battery power for critical loads. Energy Storage Systems (ESS) A core component in Victron ESS setups, optimising self-consumption and managing energy flow with grid-tie PV inverters or solar charge controllers. Built-In Protection Functions The Victron MultiPlus-II 24/5000/120-50 230V incorporates comprehensive safety features to protect both the unit and your system. These include protection against output short circuit, overload, battery overvoltage & undervoltage, overheating, 230 VAC on the inverter output (e.g., from another AC source), and excessive input voltage ripple. The robust enclosure is rated IP22, offering protection against solid objects over 12mm and vertically falling water drops. Common Questions What is the MultiPlus-II's UPS function? The MultiPlus-II features a high-speed 50A AC transfer switch that provides Uninterruptible Power Supply (UPS) functionality. In the event of a grid failure or disconnection of shore/generator power, the inverter automatically takes over the supply to connected loads in less than 20 milliseconds, ensuring sensitive electronics continue to operate without disruption. Can I expand the system's power output? Yes, the MultiPlus-II can be connected in parallel with up to six identical units to achieve a higher power output. It also supports three-phase wye (Y) configuration for larger, more complex systems. How does PowerAssist benefit my system? PowerAssist allows the MultiPlus-II to supplement a limited AC power source (like a small generator or shore connection) with power drawn from the battery during periods of high demand. This prevents overloading the AC source and allows you to run larger loads than the input source alone could handle. Once demand drops, surplus power recharges the battery. How can I monitor the MultiPlus-II remotely? When coupled with a Victron GX device (e.g., Cerbo GX), you can monitor and control your MultiPlus-II and the entire system locally via LAN/Wi-Fi or remotely via the internet using the free Victron Remote Management (VRM) app or portal website. Installation Notes Professional installation by a qualified electrician or solar installer is highly recommended. Ensure adequate ventilation around the unit to prevent overheating, especially in high ambient temperatures. Follow all local electrical codes and safety regulations during installation. Proper cable sizing for both DC battery connections and AC wiring is crucial for safety and performance. Refer to the manufacturer's manual for detailed recommendations. This inverter/charger is not supplied with cables. Before You Buy Verify your battery bank voltage matches the 24V requirement of this unit. Calculate your total power consumption (VA and Wattage) to ensure the 5000VA/4000W continuous output meets your needs, considering peak loads. Confirm the AC input voltage (230V) and frequency (50Hz) are suitable for your region or application. Consider if additional Victron GX devices are desired for advanced monitoring and control. Always consult the detailed user manual for complete installation, operation, and safety guidelines. Please verify all specifications and compatibility requirements before purchase. This product is covered by a 5-year manufacturer warranty.
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