MultiPlus 12/3000/120-50

The Victron Energy MultiPlus 12/3000/120-50 is a versatile energy management system that combines three main functions into a single device:

A powerful pure sine wave inverter.
An advanced adaptive battery charger.
A high-speed AC transfer switch.
It is designed to provide a centralized solution for power conversion and management in various applications, including marine systems, recreational vehicles, and backup power systems.

The MultiPlus 12/3000/120-50 provides a continuous output power of 3000 VA (2400 W) at an ambient temperature of 25°C. It can also handle a peak power of 6000 W, which is useful for starting high-inrush loads.

The integrated battery charger delivers a charging current of 120 A for the main service battery and 4 A for the start battery. It uses a four-stage adaptive charging technology: bulk, absorption, float (maintenance), and storage. This technology is compatible with lead-acid batteries (sealed, AGM, gel, flooded) and lithium batteries.

Yes, the MultiPlus 12/3000/120-50 is compatible with a wide range of battery types, including lead-acid batteries (sealed, AGM, gel, flooded) and lithium batteries. Its adaptive charger adjusts the charging process based on the battery type and condition.

The PowerControl function allows you to set a maximum current from a limited AC source, such as a generator or shore power supply. The MultiPlus accounts for other AC loads and uses any excess current to charge the battery, thereby preventing overload of the external source.

The PowerAssist function extends the PowerControl principle by allowing the MultiPlus to supplement the capacity of the alternative source (generator or shore power). When peak power is required for a short period, the MultiPlus immediately provides additional power from the battery. When the load decreases, the excess energy is used to recharge the battery, preventing overload and enabling the use of smaller generators.

Yes, the MultiPlus 12/3000/120-50 is designed to be scalable. Up to six units can be connected in parallel to increase total output power. Additionally, three units can be configured for three-phase output, providing flexibility for more complex systems.

The MultiPlus 12/3000/120-50 can be configured, monitored, and controlled in several ways:

Via DIP switches for basic settings.Using the VictronConnect app or the VE-Configure software (requires an MK3-USB interface for advanced configuration).Remotely by connecting a GX product (such as Cerbo GX or Ekrano GX) to the internet, enabling access to operational data via the free VRM (Victron Remote Management) portal.

The MultiPlus 12/3000/120-50 requires a DC input voltage ranging from 9.5 VDC to 17 VDC. It is designed to operate with a 12 V battery system.

The MultiPlus 12/3000/120-50 inverter provides an AC output voltage of 120 VAC ± 2% with a frequency of 60 Hz ± 0.1%. It delivers a pure sine wave, suitable for sensitive electronic equipment.

Yes, the MultiPlus 12/3000/120-50 includes a UPS function. In the event of a mains power failure or generator shutdown, it automatically switches to inverter mode and resumes power supply to connected devices. This transfer is so fast (less than 20 milliseconds) that it does not disrupt the operation of computers and other sensitive electronic equipment.

The integrated AC transfer switch in the MultiPlus 12/3000/120-50 provides a very fast transfer time of less than 20 milliseconds. This ensures nearly uninterrupted AC power for sensitive equipment.

When Search Mode is enabled, the inverter’s power consumption with no load or very light load is reduced by about 70%. In this mode, the MultiPlus shuts down when there is no load and restarts every two seconds for a brief period. If the output current exceeds a defined level, the inverter continues running; otherwise, it shuts down again.

Yes, the MultiPlus 12/3000/120-50, being a model with a 50 A transfer capacity, is equipped with three programmable relays. By default, these relays can be configured as alarm relays, but they can also be programmed for various other applications, such as starting/stopping a generator.

The MultiPlus 12/3000/120-50 includes several protections to ensure system safety and durability:

Short-circuit protection on output.Overload protection.High or low battery voltage protection.Excessive temperature protection.Prevention of 120 VAC presence on inverter output.High input ripple voltage protection.

Yes, the MultiPlus 12/3000/120-50 is perfectly suited for solar energy applications. It can be used in standalone systems as well as grid-connected systems. It can manage excess solar energy to recharge batteries and, in case of grid failure, it can replace the grid to power essential equipment.

The MultiPlus 12/3000/120-50 is a Class I safety device. Its AC input and/or output terminals must be connected to an uninterrupted ground for safety purposes. An additional grounding point is also located outside the product. It is essential to ensure that the grounding protection is intact before any use.

The MultiPlus 12/3000/120-50 comes with a battery temperature sensor. This sensor automatically reduces the charging voltage when battery temperature rises. This feature is particularly important for maintenance-free batteries, as it helps prevent overcharging and drying out, thereby extending their lifespan.

Yes, the MultiPlus 12/3000/120-50 features battery voltage sensing. This function compensates for voltage loss caused by cable resistance by measuring voltage directly at the DC bus or battery terminals, ensuring the battery receives the correct charging voltage.

The MultiPlus 12/3000/120-50 is designed to operate within a temperature range of -40 °C to +65 °C, with fan-assisted cooling. Maximum humidity (non-condensing) must not exceed 95%. During installation, ensure sufficient free space around the unit for proper ventilation and mount it in a heat-resistant environment.