Victron Multi RS19 Solar 48/6000/100-450/100

The Victron Multi RS19 Solar is a single-phase 48-V hybrid inverter designed for installation in a standard 19-inch rack. It combines an inverter/charger in a single unit with two independent 3-kW MPPT solar trackers. This makes it a compact control center for stationary storage, backup power, and off-grid systems.

High-frequency technology enables a weight of 12.2 kg with a rated output of 6 kVA. The Multi RS19 Solar can coordinate energy from PV, a battery, and an AC input, power 230-V loads, and charge a 48-V battery using solar energy or an AC source.

The Main Benefits

• Three functions in one device: The inverter, AC battery charger, and solar MPPT reduce the space required and simplify system setup.
• Two independent MPPT trackers: Two separate PV strings can each be configured for up to 3 kW DC solar charging capacity, for example, in cases where the roof orientations differ.
• Power reserve for inrush currents: Up to 9 kW of peak power for 3 seconds helps power up compatible loads.
• PowerControl and PowerAssist: Power consumption at the AC input can be limited and supplemented by battery power during periods of high consumption.
• System Monitoring: The display and Bluetooth enable local control; a GX device expands the system to include centralized monitoring and ESS functions.
• Rack Integration: The 3-HE enclosure fits into standard 19-inch racks and can be combined with rack batteries and system components to save space.

Two MPPT trackers for up to 6 kW of PV

Each of the two trackers processes its own PV string and delivers a maximum of 3 kW of DC solar charging power. The MPPT operating range is 65 to 450 V DC, and the start-up voltage is 120 V. The separate control system is particularly useful when module arrays are oriented differently or are subject to varying degrees of shading at different times.

Grid Operation, Backup Power, and Off-Grid Systems

In a grid-connected system, the Multi RS19 Solar can optimize self-consumption, reserve battery power for critical loads, and—when paired with a compatible GX device—provide features such as zero-feed-in or Dynamic ESS. The 50-A transfer switch routes an available AC source to the loads; PowerAssist supplements energy from the battery as needed.

In an off-grid system, the unit connects PV generation, 48-V storage, and 230-V loads. A generator can be integrated as an AC source, provided that at least firmware version 1.11 is installed and the input is configured according to the Victron manual. Typical stationary applications include tiny houses, alpine huts, mountain pastures, hunting lodges, and compact power centers for commercial and agricultural use, provided that the power requirements, environmental conditions, and installation are compatible with the device.

Operation as a grid-tied PV inverter without a battery is also possible. This mode requires a configured grid code; no loads may be connected to the AC output.

Performance and Battery Charge

At 25 °C, the continuous output power increases linearly with battery voltage, from 4,600 W at 46 V to 5,200 W at 52 V. At 40 °C, 4,500 W is available; at 65 °C, 3,000 W remains available. For short-term load peaks, Victron specifies 9 kW for 3 seconds and 7 kW for 4 minutes, in each case assuming a cold unit.

Under the specified conditions, the AC charger reaches up to 88 A at 57.6 V. The The combined charging current from AC and PV is limited to a total of 100 A limited. The appropriate charging parameters and current limits must be adjusted to match the 48-V battery being used and its BMS.

Communication and System Integration

The Multi RS19 Solar features Bluetooth, VE.Can, BMS-Can, and VE.Direct. Settings and operating data can be accessed locally via VictronConnect and the built-in display. For a system with a Cerbo GX or another GX device, the connection is established via VE.Can; ; VE.Direct is for the GlobalLink 520 or a VE.Direct-zu-USB-Adapter intended.

In a small system without a GX device, BMS-Can can be used to communicate with compatible, regulated batteries. If a GX device is present in the system, the battery is typically connected to its BMS-Can port. Actual battery compatibility and the required settings must be verified using the latest Victron compatibility documentation before installation.

Using AC Outputs Correctly

AC-out-1 supplies the designated loads from the AC input, PV, and battery, depending on the configuration. AC-out-2 is permanently connected to the AC input and is therefore active only when an AC source is present there. This second output is intended for non-critical loads and cannot be disconnected via an internal relay with a time delay or programmable control.

Technical Specifications

Planning and Installation

The IP20 unit is designed for protected, dry installation. The rack must allow for unobstructed airflow from front to back; Victron recommends at least 1U of clearance above and below the unit. The design, protective devices, grounding, cable cross-sections, PV string voltage, and grid code must comply with the current manufacturer’s documentation and the regulations applicable at the installation site.

Conclusion

The Victron Multi RS19 Solar 48/6000/100-450/100 combines an inverter, a grid charger, and two high-voltage MPPT trackers in a compact 19-inch enclosure. It serves as an ideal foundation for high-performance 48-V rack systems when PV charging, backup power, or off-grid operation—as well as integration into the Victron ecosystem—are required. AUTARKING provides support for system design, compatibility testing, and integration.

Frequently Asked Questions About the Victron Multi RS19 Solar

• What does 48/6000/100-450/100 mean?

  
  

  The term refers to a 48-V Battery System, 6 kVA inverter power, a maximum combined battery charging current of 100 A, and solar MPPTs with up to 450 V DC. The unit features two independent trackers with a combined maximum DC solar charging capacity of 6 kW.

• Can the Multi RS19 Solar be operated without a battery?

  
  

  Yes. In mode PV Inverters Only It can operate in grid-connected mode without a battery. To do so, a grid code must be configured; no loads may be connected to the AC output in this mode. Suitability for the planned grid application must be verified in advance.

• Is parallel or three-phase operation possible?

  
  

  One Connecting multiple devices in parallel per phase is not supported. A three-phase system is possible with exactly one Multi RS19 Solar per phase.

• Does the system require a GX device?

  
  

  A GX device is not always required for basic operation. For centralized monitoring and advanced ESS functions, such as zero-feed-in or backup control, a suitable GX device is used and connected via VE.Can connected.

• Can a generator be connected?

  
  

  Yes, provided that at least firmware version 1.11 is installed and the AC input is configured as a generator according to the Victron manual. The input current limit and other settings must be appropriate for the generator.

• Why can't a PV string always be rated for 450 V, even though the input is 450 V?

  
  

  In addition to the absolute 450-V limit, Victron requires that the maximum PV voltage not exceed eight times the battery float voltage. Furthermore, the open-circuit voltage of solar modules increases in cold weather. The string configuration must therefore be determined based on the specific modules, the lowest ambient temperature, and the battery parameters.