MultiPlus-II 24/5000/120-50

The Victron Energy MultiPlus-II 24/5000/120-50 is a multifunction device combining a pure sine wave inverter, an adaptive battery charger, and an ultra-fast AC transfer switch. It is designed for marine, mobile, vehicle, and off-grid or grid-connected energy systems with energy storage system (ESS) capabilities.

The integrated inverter in the MultiPlus-II 24/5000/120-50 provides an apparent power of 5000 VA, corresponding to a continuous power output of 4000 W. It can also handle a peak power of up to 9000 W thanks to the PowerAssist function.

The MultiPlus-II 24/5000/120-50 integrates an adaptive battery charger with a capacity of 120 A. It is designed to charge batteries in 24 V systems.

The PowerControl and PowerAssist functions are designed to optimize the use of limited AC sources, such as a generator or shore power.

PowerControl automatically adjusts the battery charging current to prevent overloading the input AC source. PowerAssist supplements the input AC source power with battery energy when power demand exceeds the source's capacity, allowing peak loads to be handled without overloading the source.

Yes, the MultiPlus-II 24/5000/120-50 is compatible with a wide range of batteries, including lead-acid batteries (gel, AGM) and lithium-ion batteries. The adaptive charger can be configured to meet the specific requirements of each battery type.

Yes, it is possible to connect external battery management systems (BMS) to the MultiPlus-II. This requires the BMS to provide two separate dry contacts to signal overvoltage/full battery and undervoltage/empty battery conditions. The MultiPlus-II must be updated with the latest firmware version and configured via the "Two-Signal BMS Support" assistant in VEConfigure3. Isolation must be provided on the BMS side.

Yes, the MultiPlus-II 24/5000/120-50 is designed for scalability. Up to six units can be connected in parallel to increase total output power. Additionally, it can be configured for three-phase systems, providing significant flexibility in designing complex energy systems.

Several options are available for configuring and monitoring the MultiPlus-II:

VEConfigure: Desktop or PC software, requiring an MK3-USB interface. Cerbo GX and Ekrano GX: Victron Energy monitoring and control devices. Bluetooth: Via an optional Bluetooth dongle for remote monitoring. These tools allow you to adjust system settings and view operational data.

Yes, the MultiPlus-II 24/5000/120-50 includes anti-islanding protection. This feature is essential for systems connected to the grid, as it ensures the inverter disconnects from the grid in the event of a power outage, preventing accidental backfeeding of the grid by the inverter.

The MultiPlus-II 24/5000/120-50 features a "no-break" function on its main AC output. The transfer time is extremely fast, under 20 milliseconds. This ensures that sensitive electronic equipment, such as computers, continues to operate without interruption when switching between the external AC source (shore power, generator) and the inverter.

The MultiPlus-II 24/5000/120-50 is designed to operate with a DC input voltage ranging from 19 VDC to 33 VDC. This voltage range allows flexibility when integrating with various 24 V battery setups.

Yes, the MultiPlus-II 24/5000/120-50 is a pure sine wave inverter. This means it produces high-quality alternating current, identical to that of the public grid, making it compatible with all types of electronic devices, including the most sensitive ones.

The MultiPlus-II has two AC outputs. The first main output features the "no-break" function for critical loads. The second AC output is active only when the MultiPlus-II is powered by an external AC source (mains or generator). It is ideal for connecting non-priority loads, such as a water heater, which should not discharge the battery.

Yes, the MultiPlus-II is a central and ideal component for Victron energy storage systems (ESS). It enables seamless integration with MPPT solar chargers or grid-tied PV inverters, providing intelligent energy management for self-consumption, backup power, or cost optimization.

The MultiPlus-II 24/5000/120-50 provides an AC output voltage of 230 VAC ± 2%. The output frequency is 50 Hz, but can be adjusted to 60 Hz depending on application requirements.

The 50 A AC transfer switch integrated into the MultiPlus-II manages the switching between the external AC power source (such as the grid or a generator) and the inverter. It ensures a fast and smooth transition, providing continuous power to connected loads, particularly on the main output with its "no-break" function.

The MultiPlus-II 24/5000/120-50 is ideally suited to a variety of professional applications, including:

Marine energy systems (boats, yachts).Onboard systems (vehicles, motorhomes).Off-grid installations (isolated).Grid-connected systems with energy storage features (ESS).

The MultiPlus-II manages overload from a generator or the grid using its PowerControl and PowerAssist functions. PowerControl reduces the charger's current demand to prevent exceeding the generator/grid limit. PowerAssist, in turn, adds power from the battery to supplement the AC source when demand is too high, thus avoiding overload and preventing the external source from shutting down.

The MultiPlus-II has several connection ports for operation and integration:

AC inputs/outputs for connections to the grid, generator, and loads.Battery cable terminals.VE.Bus ports for communication and configuration.Inputs for the current transducer (Current Sense), temperature sensor (T-Sense), and voltage sensor (V-Sense).Auxiliary inputs (Aux1, Aux2) and auxiliary relay (Aux Relay).Connection for the remote on/off button.

The MultiPlus-II 24/5000/120-50 inverter delivers a maximum efficiency of 96%. This high efficiency minimizes energy losses during DC to AC conversion, optimizing the use of energy stored in the batteries.