Description
SmartSolar MPPT RS 450/100-MC4
High-voltage, high-current solar charge controller built for big 48 V systems. It takes long PV strings (up to 450 V) and delivers up to 100 A of ultra-efficient charging—perfect for large off-grid or hybrid installs.
The Victron SmartSolar MPPT RS 450/100-MC4 is a high-performance solar charge controller designed for large, off-grid and on-grid solar power systems with series-connected PV arrays and a 48V battery bank. It is the ideal solution for maximizing energy harvest from large-scale solar installations.
Key Features
The SmartSolar MPPT RS 450/100-MC4 stands out with its array of advanced features:
- Ultra-Fast MPPT Technology: This controller uses an ultra-fast Maximum Power Point Tracking (MPPT) algorithm that is particularly effective in rapidly changing weather conditions, like a cloudy sky. It can increase energy harvest by up to 30% compared to traditional PWM controllers and 10% compared to slower MPPT controllers.
- Dual MPPT Inputs: With two independent MPPT trackers, you can connect two separate solar arrays to optimize performance based on different orientations, angles, or shading conditions. Each tracker can handle its own maximum power point, ensuring your system performs at its peak.
- High Voltage and Current Handling: The “450” in the model name signifies its ability to handle a maximum PV open circuit voltage of up to 450V, making it suitable for high-voltage solar panel strings. The “100” indicates a maximum battery charge current of 100A, providing a substantial charging capacity for your 48V battery bank.
- Isolated PV Connections: For enhanced system safety, the unit features full galvanic isolation between the PV (solar) connections and the battery connections. This provides an additional layer of protection, particularly important in high-voltage installations.
- Connectivity and Monitoring: The built-in Bluetooth Smart allows for wireless setup, monitoring, and updates via the VictronConnect app. You can also monitor your system remotely through the Victron Remote Management (VRM) portal when connected to a GX device, such as the Cerbo GX. The controller also has a built-in display for at-a-glance information.
- Parallel Operation: For even larger systems, multiple MPPT RS units can be synchronized and connected in parallel using the VE.Can bus, allowing for a scalable and powerful charging solution.
- Comprehensive Protection: The unit includes a range of electronic protections, including PV reverse polarity, output short circuit, and over-temperature protection. It also has a unique PV isolation resistance monitoring feature that can detect faults that reduce the insulation of the panels to unsafe levels, providing peace of mind and system reliability.
Technical Specifications
MC4-ready PV inputs for quick, tidy wiring
Fast MPPT tracking for maximum harvest, even in partial shade
Built-in Bluetooth (VictronConnect) + VE.Can / VE.Direct for system integration and VRM remote monitoring
Works with LiFePO₄ and lead-acid batteries (48 V)
Advanced protections: PV isolation/ground-fault detection, over-temp, reverse polarity
Quiet, lightweight RS design for clean installs
Ideal for: larger homes, sheds/workshops, and commercial arrays using long PV strings with Victron inverters.