Victron BlueSolar MPPT 250/100-Tr VE.Can

In a nutshell

Large MPPT solar charge controller, 250 V and 100 A, for 12, 24 or 48 V batteries. It uses up to 5,800 W of panels at 48 V. Designed for 48 V home systems together with a Victron inverter/charger.

What the two numbers of an MPPT charge controller mean

• The volts (V) are the maximum that the panels connected in series can add up to. On cool mornings the voltage rises a little, so you must leave some margin.
• The amps (A) are the maximum current the controller delivers to the battery. Multiplied by the battery voltage, this current gives the panel power it can use.
• At 48 V the same device delivers four times as much as at 12 V; that is why serious systems run at 48 V.
• If more panels are connected than it can handle, the controller does not use the excess (excess power does not damage it). But you must never exceed the input voltage: that does break it.

Keep in mind the Voc (open-circuit voltage) of your panels: for example, if a panel has 50.6 V, four in series add up to 202 V and five, 253 V, more than this equipment accepts.

About this model (250 V · 100 A)

• Several strings of panels in parallel.
• Usable power: 1,450 W at 12 V · 2,900 W at 24 V · 4,350 W at 36 V · 5,800 W at 48 V.
• It only recognizes whether the battery is 12, 24 or 48 V; for 36 V it must be configured with software.
• Panels and battery with screw terminals (Tr). Efficiency 99 %.
• It does not include built-in Bluetooth: it is configured and monitored through its VE.Direct port, with the VictronConnect app via a VE.Direct Bluetooth Smart dongle or a VE.Direct to USB cable.
• It includes VE.Can, which connects it to the Cerbo GX and allows up to 25 controllers to work synchronized in parallel.
• Programmable relay and remote on/off input.