The Victron SmartSolar MPPT RS 450/100-MC4 is a high-voltage solar charge controller built for large off-grid and hybrid battery systems. It accepts a 450V maximum PV input and delivers a 100A charge current, making it suited to commercial installations and large residential arrays that run high string voltages. Factory-fitted MC4 connectors mean it wires straight into standard panel strings without extra adaptors on site.

Key features

• PV input, 450V maximum open-circuit voltage, allowing longer strings with fewer parallel runs.
• Charge current, 100A maximum, sized for large battery banks.
• Connectors, integrated MC4 on the PV input for tool-free connection to standard panel cables.
• Monitoring, built-in Bluetooth via the VictronConnect app for setup, monitoring and firmware updates.
• Networking, VE.Can connectivity for integration with Victron GX devices, Cerbo GX and the VRM portal.
• Battery compatibility, supports 12V, 24V, 36V and 48V systems with automatic detection, and programmable profiles for lithium, AGM and gel chemistries.

Product overview

The RS series sits above the standard SmartSolar MPPT range on input voltage. A 450V ceiling lets installers put more panels in series per string, cutting the number of strings and the cabling that goes with them. That matters most on larger rooftop or ground-mount arrays, where fewer DC runs mean less installation labour.

The 100A output is delivered across the supported battery voltage range. At 48V that works out to roughly 4.8kW of charge power from one unit. VE.Can lets it sit natively inside a Victron system alongside MultiPlus or Quattro inverter-chargers and a GX monitoring device, and VictronConnect over Bluetooth handles configuration without a separate programming interface.

Applications

• Large off-grid systems needing a single high-current controller on a high-voltage string.
• Commercial and agricultural sites where shorter DC cable runs cut installation cost.
• Hybrid setups paired with a MultiPlus or Quattro and a Cerbo GX for full system monitoring.
• Battery storage using lithium, including Victron Smart Lithium and Pylontech, or lead-acid chemistries.
• Ground-mount arrays where a 450V string voltage is achievable.

What's included

• 1x Victron SmartSolar MPPT RS 450/100-MC4 charge controller

Installation notes

This controller runs up to 450V DC on the PV input. Installation should be carried out by a qualified electrician or MCS-accredited solar installer experienced with high-voltage DC systems, mounted in a ventilated location away from direct weather exposure. VE.Can termination resistors need to be fitted correctly when joining a Victron CAN bus network.