Description
The Victron SmartSolar MPPT RS 450 | 100 is a high-performance, high-voltage MPPT solar charge controller designed for large off-grid solar power systems. Supporting up to 450V PV open-circuit voltage and 100A charging output, it is ideal for off-grid cabins, tiny homes, agricultural power systems, remote installations, mobile commercial trailers, and advanced marine or RV systems using large-format solar arrays.
The RS 450 | 100 features a single ultra-high-voltage MPPT tracker, enabling long series strings of residential solar panels for maximum efficiency and minimal cable losses. With Bluetooth Smart, VE.Can, VE.Direct, and a full-color display (on applicable models), it integrates seamlessly into the Victron ecosystem, including Cerbo GX-powered monitoring systems.
For wiring, cold-temperature voltage calculations, battery configuration, grounding, fusing, and system design guidelines, refer to your uploaded SmartSolar RS user manual.
Solar Array Capability
With a PV input limit of 450V, the RS 450 | 100 can accept long series strings of 60-cell, 72-cell, and bifacial residential solar panels.
Maximum Recommended Solar Array Size
| Battery Voltage | Max Charge Output | Max Recommended Solar |
|---|---|---|
| 24V system | 100A | ≈ 6,000W |
| 48V system | 100A | ≈ 12,000W |
The controller will safely limit charging current to 100A, allowing slight oversizing of the array.
Engineering Solar Table (Vmp / Imp / Series Limits)
| Panel Type | Typical Vmp | Typical Imp | Max Panels in Series (450V limit) | Notes |
|---|---|---|---|---|
| 60-cell residential panel | 30–33V | 8–9A | Up to 12S | Common for off-grid homes |
| 72-cell residential panel | 37–39V | 8–10A | Up to 10S | Ideal for large roof arrays |
| 144-half-cut module | 38–41V | 10–13A | Up to 10S | High-efficiency bifacial panels |
| 24V 350–450W module | 32–38V | 9–11A | Up to 11S | Excellent hybrid application panel |
| Small RV 100W panel | 18–19V | 5–6A | Up to 23S | Not recommended—too low current for RS controllers |
The RS 450 | 100 is optimized specifically for residential/commercial solar modules, not RV-grade panels.
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