The Victron SmartSolar MPPT RS 450/100-MC4 is a 48V solar charge controller designed for systems with large, series-connected PV arrays. With a 450V DC maximum PV input and a 100A rated charge current, it delivers up to 5.8kW of charging power, making it a strong fit for mid-to-large off-grid and grid-connected battery systems that need a high-voltage, high-current MPPT solution in a lighter, more compact unit than its 200A sibling.
The controller features two independent MPPT tracking inputs, allowing the array to be split across two strings with different orientations or shading for improved overall yield. Full galvanic isolation between the PV and battery connections adds an extra layer of system safety at these higher voltages, while the unit's light 7.9kg weight and quiet, fan-assisted cooling make it easier to site and install. Setup and live monitoring run through the VictronConnect app over Bluetooth, with a VE.Can port allowing up to 25 units to be daisy-chained and synchronised together.
100A
Rated Charge Current
Please Note
The MPPT operating voltage range is limited by the battery's float voltage — PV open-circuit voltage (VOC) should not exceed 8× the configured float voltage. For example, a 55.2V float setting caps maximum recommended PV VOC at around 441.6V. Always check array VOC against battery settings before final string sizing.
Two Independent MPPT Trackers
Splits the PV array across 2 separate tracking inputs, allowing panels facing different orientations or subject to partial shading to be tracked independently for improved overall yield.
Full Galvanic Isolation
Complete electrical isolation between the PV and battery connections provides an additional layer of safety across the whole system, an important consideration at 450V array voltages.
Wide 450V PV Input Range
A 65–450V DC operating range with a 120V startup voltage accommodates long, high-voltage series strings, reducing cable losses and simplifying array design.
PV Isolation Monitoring
Continuously tests resistive isolation between PV+/PV- and ground, reporting a fault and sending an alert to a connected GX device if insulation resistance drops below a safe threshold.
VE.Can Synchronised Parallel Operation
Up to 25 units can be daisy-chained via VE.Can, synchronising charge stages across multiple controllers on the same battery bank for coordinated larger systems.
Bluetooth Setup & Monitoring
Configure, monitor and adjust settings using the VictronConnect app over Bluetooth, with a built-in 30-day history showing the individual performance of each MPPT tracker.
Light, Compact Design
At just 7.9kg, high-frequency technology and a compact enclosure make this the lighter, easier-to-mount option compared to the 200A model, while still handling large PV arrays.
Fan-Assisted Active Cooling
Active cooling maintains full rated output across a wide -40°C to +60°C operating range, keeping the unit efficient and quiet under sustained load.
| Charger |
| Battery Voltage |
48V |
| Rated Charge Current |
100A |
| Maximum Charge Power |
5.8kW at 57.6V |
| Charge Voltage 'Absorption' (default) |
57.6V (adjustable) |
| Charge Voltage 'Float' (default) |
55.2V (adjustable) |
| Programmable Voltage Range |
36–60V |
| Charge Algorithm |
Multi-stage adaptive (adjustable) |
| Battery Temperature Sensor |
Included |
| Maximum Efficiency |
96% |
| Self-Consumption |
15mA |
| Solar Input |
| Maximum DC PV Voltage |
450V |
| Start-Up Voltage |
120V |
| MPPT Operating Voltage Range |
65–450V |
| Number of Trackers |
2 |
| Max. PV Operational Input Current |
16A per tracker |
| Max. PV Short Circuit Current |
20A per tracker |
| Max. DC Output Charging Power |
4,000W per tracker / 5,760W total |
| Max. PV Array Size per Tracker |
7,200Wp (450V x 20A) |
| PV Isolation Fail Level |
100kΩ |
| General |
| Synchronised Parallel Operation |
Up to 25 units via VE.Can |
| Programmable Relay |
Yes |
| Protection |
PV reverse polarity, output short circuit, over-temperature |
| Data Communication |
VE.Direct, VE.Can, Bluetooth |
| Bluetooth Frequency / Power |
2402–2480 MHz / 4dBm |
| General Purpose Analogue/Digital In |
Yes, 2x |
| Remote On-Off |
Yes |
| Operating Temperature Range |
-40°C to +60°C (fan-assisted cooling) |
| Humidity |
Max. 95%, non-condensing |
| Enclosure |
| Material & Colour |
Steel, blue RAL 5012 |
| Protection Category |
IP21 |
| Battery Connection |
2x M8 bolts (1x positive, 1x negative) |
| PV Power Terminals |
1 pair male/female MC4 connectors per tracker |
| Weight |
7.9kg |
| Dimensions (H x W x D) |
440 x 313 x 126mm |
| Standards |
| Safety |
EN-IEC 62109-1 |
| Country of Origin |
Designed in the Netherlands, made in India |
Important Safety Information
This controller must be installed by a competent, qualified installer in line with local electrical safety regulations. Given the 450V DC PV input, genuine MC4 connectors must be used on all PV wiring — substandard or counterfeit connectors are a recognised fire and arc-fault risk at this voltage.
What's the difference between the 450/100 and 450/200 models?
Both share the same 450V PV input and 48V battery voltage, but the 450/100 delivers up to 100A and 5.8kW of charging power with 2 MPPT trackers, compared to the 450/200's 200A, 11.5kW output and 4 MPPT trackers. The 450/100 is also considerably lighter at 7.9kg vs 13.7kg.
Can I connect multiple controllers together?
Yes. The VE.Can port supports up to 25 units daisy-chained together, allowing multiple controllers on the same battery bank to synchronise their charge stages.
Do I need a display screen to monitor this controller?
No separate display is required for full monitoring — the unit connects via Bluetooth to the VictronConnect app on a smartphone, tablet or computer for setup, live monitoring and 30-day history.
What's the maximum PV array size I can connect?
Each of the 2 MPPT trackers supports up to 7,200Wp (based on 450V x 20A), giving a theoretical total array size of up to roughly 14,400Wp across both trackers, though actual sizing should always be checked against the 8× float voltage VOC rule.
Is this controller compatible with lithium batteries?
Yes. The charge algorithm is fully programmable with adjustable voltage settings, supporting lithium as well as lead-acid and other common battery chemistries.
