Knowledge & Tips — victron-smartsolar

Passive vs. Active Cooling in Victron MPPT Solar Charge Controllers – Technical Differences Many solar charge controllers use either passive or active cooling to dissipate heat. Victron MPPT controllers such as SmartSolar and BlueSolar are no exception. The distinction is technically real: Passive cooling – how it works and when it is sufficient Passive cooling uses natural heat dissipation via the housing and air contact, without any mechanical parts. It is often perfectly sufficient, depending on: Controller power rating Ambient temperature Installation location: open vs. enclosed Thermal contact with metal parts or exterior walls Examples: A low-power MPPT controller in...

Why Victron MPPT Controllers Throttle in Heat – Technical Background Victron MPPT solar charge controllers, such as SmartSolar and BlueSolar, feature thermal protection mechanisms that reduce power output once the internal temperature becomes too high. This so-called derating prevents damage to the electronics and is a standard protective mechanism. Causes of Overheating Strong sunlight exposure on the solar charge controller housing High PV output over an extended period Installation in cramped control cabinets or technical rooms Insufficient air circulation Technical Details on Derating Victron MPPT controllers achieve their rated output up to ~40 °C ambient temperature Above 40 °C, automatic power reduction...