Erstbestellaktion für REFUsol Wechselrichter

The REFUsol 20K-2T is a powerful, compact inverter with two MPP trackers and an efficiency of up to 98.6% – ideal for commercial and industrial photovoltaic systems.More informationREFUsol 20K-2T – New flexibility meets compatibilityThe REFUsol 20K-2T inverter offers a forward-looking solution for small to medium-sized PV projects. With its two independent MPP trackers, it allows flexible adaptation to different roof pitches and system designs. Thanks to its compact design and high power density, the unit is suitable for both rooftop and ground-mounted systems.Integration into existing systems is straightforward via Ethernet or a WiFi logger (optional). The inverter can be conveniently monitored remotely via the REFUview online platform – including a modern user interface, performance analysis and system overview throughout the entire warranty period.Key features2 independent MPP trackers for flexible string configurationMax. efficiency: 98.6% / European efficiency: 98.2%Long-term overload capacity up to 110%Compatible with older REFUsol inverters – ideal for repoweringIntegrated DC switch and comprehensive protection functionsIP65 protection rating for indoor and outdoor useIntegration via RS485, USB, Ethernet or WiFi (optional)Warranty: 10 yearsTechnical data – REFUsol 20K-2TItem no.853P020Recommended PV output (kWp)30Max. input voltage (V)1100Nominal input voltage (V)650Number of MPP trackers2Max. current per MPPT (A)26DC connectionMC4Rated power (kW)20Max. AC power (kVA)22Max. output current (A)31.9Rated output voltage (V)3P/N/PE: 230/400TopologyTransformerlessProtection classIP65Dimensions (H × W × D)430 × 520 × 189 mmWeight22 kgCoolingFanNoise level< 40 dBAMax. operating temperature+60 °C (derating > 45 °C)Protection functionsAnti-islanding, DC reverse polarity, overvoltage, overcurrent, earth fault, overtemperatureCertificatesVDE-AR-N 4105, EN 50549, CEI 0-21, G98/G99, etc.Interfaces & communicationRS485 / USB: integratedEthernet / WiFi: optional (item no. 924024 / 924025)Compatible with REFUview online monitoringThe REFUsol 20K-2T combines efficiency, compatibility and future-oriented technology in a compact unit – the perfect choice for commercial PV systems and repowering projects.

The REFUsol 20K-3T is a compact 20 kW string inverter with three MPP trackers and 98.6% efficiency – ideal for commercial and industrial PV systems.More informationREFUsol 20K-3T – Efficiency and flexibility for commercial PV projectsThe REFUsol 20K-3T combines advanced technology with high reliability and easy installation. With three independent MPP trackers, an efficiency of up to 98.6% and a long-term overload capacity of 110%, it is the optimal choice for rooftop and ground-mounted systems in the power range up to 20 kW. Thanks to its compact design, flexible communication interfaces and online monitoring via REFUview, the inverter can be quickly integrated and operated efficiently.Highlights3 independent MPP trackers for flexible system designsEfficiency up to 98.6% / EU efficiency 98.2%110% overload capacity for maximum energy yieldCompatible with older REFUsol models – ideal for repowering projectsCommunication via RS485, USB, Ethernet or optional WiFi loggerIntegrated DC switch and comprehensive protection functionsOnline monitoring via the REFUview platformIP65 protection rating – dust and splash-proof10-year manufacturer’s warrantyTechnical data – REFUsol 20K-3TRated power (AC)20 kWMax. AC power22 kVARecommended PV capacityup to 30 kWpMax. input voltage (DC)1100 VOperating voltage range (DC)180 – 1000 VNumber of MPP trackers3 (2 inputs per MPPT)Max. output current (AC)33.3 AGrid connection3P/N/PE – 230/400 V, 50/60 HzTopologyTransformerlessProtection ratingIP65CoolingActive (fan-assisted)Dimensions (H × W × D)480 × 585 × 220 mmWeight36 kgEfficiency (max. / EU)98.6% / 98.2%CertificatesEN 61000-6-1/3, VDE-AR-N 4105/4110, EN 50549-1Item number853P020.010Warranty10 yearsSafety & CommunicationThe REFUsol 20K-3T is equipped with an integrated DC switch, anti-islanding protection, earth fault and overtemperature monitoring, as well as overvoltage and overcurrent protection. Communication is via RS485, USB, Ethernet or optional WiFi. All operating data can be read directly on the device via the integrated LCD display, whilst the REFUview platform enables convenient remote monitoring and analysis in real time.ApplicationsCommercial rooftop installationsAgricultural businessesSmall to medium-sized industrial installationsRepowering of existing REFUsol systemsHybrid and grid-connected PV conceptsConclusionThe REFUsol 20K-3T offers an optimal balance of performance, reliability and cost-effectiveness. It is the ideal solution for specialist firms and installers who value modern communication, simple installation and long-term efficiency.

The REFUsol 25K-3T is a compact 25 kW string inverter with three MPP trackers and an efficiency of up to 98.6% – ideal for commercial PV systems.More informationREFUsol 25K-3T – Flexible, efficient, robustWith three independent MPP trackers, the 25K-3T offers maximum freedom in string configuration for different roof orientations and complex system designs. Its high long-term overload capacity of 110%, simple installation and integrated communication interfaces make it a reliable choice for rooftops and ground-mounted installations.Highlights3 MPP trackers for flexible string configurationsEfficiency up to 98.6% (EU efficiency 98.2%)110% overload capacity for higher energy yieldCompatible with older REFUsol devices – ideal for repoweringCommunication via Ethernet, RS485, USB or optional WiFiIntegrated DC disconnect switch & comprehensive protection functionsOnline monitoring via REFUviewIP65 enclosure for indoor and outdoor use10-year manufacturer’s warrantyTechnical data – REFUsol 25K-3TRated power (AC)25 kWMax. AC power28 kVARecommended PV outputup to 37.5 kWpMax. input voltage1100 VOperating voltage range180 – 1000 VNumber of MPP trackers3Max. current per MPPT40 AMax. output current42.4 AMains connection3P/N/PE – 230/400 V, 50/60 HzEfficiency (max. / EU)98.6% / 98.2%Protection ratingIP65CoolingActive (fan-assisted)Dimensions (H × W × D)480 × 585 × 220 mmWeight36 kgCertificatesVDE-AR-N 4105, VDE-AR-N 4110, EN 50549-1, etc.Item number853P025Safety & CommunicationComprehensive protection functions: DC reverse polarity protection, anti-islanding, overcurrent/overvoltage and overtemperature protection, as well as earth fault monitoring. Communication via RS485, USB, Ethernet or optional WiFi logger. An integrated LCD display enables easy on-site operation; remote monitoring via the REFUview platform.ConclusionHigh efficiency, substantial reserves and versatile connectivity – the REFUsol 25K-3T is the robust solution for small to medium-sized commercial and industrial installations, as well as repowering projects.

The REFUsol 33K-3T is a high-performance 33 kW string inverter with three MPP trackers and an efficiency of up to 98.6% – ideal for large commercial and industrial PV systems.More informationREFUsol 33K-3T – Maximum performance for professional applicationsAs the most powerful model in the REFUsol 3T series, the 33K-3T was developed specifically for large commercial and industrial installations. With its three independent MPP trackers and a long-term overload capacity of 110%, it delivers consistently high energy yields, even with complex roof orientations or mixed module arrays. The compact design and robust IP65 housing ensure easy integration and reliable operation under all conditions.Highlights33 kW nominal power at 37 kVA AC power3 independent MPP trackers for flexible string layoutsEfficiency up to 98.6% / EU efficiency 98.2%110% overload capacity for maximum energy yieldCompatible with older REFUsol inverters – ideal for repoweringCommunication via RS485, USB, Ethernet or optional WiFi loggerRemote monitoring via the REFUview platform with performance analysisIP65 housing with active cooling system10-year manufacturer’s warrantyTechnical data – REFUsol 33K-3TRated power (AC)33 kWMax. AC power37 kVARecommended PV outputup to 49.5 kWpMax. input voltage1100 VOperating voltage range180 – 1000 VNumber of MPP trackers3Max. current per MPPT40 AMax. output current56 AMains connection3P/N/PE – 230/400 V, 50/60 HzEfficiency (max. / EU)98.6% / 98.2%Protection classIP65CoolingActive (fan-assisted)Dimensions (H × W × D)480 × 585 × 220 mmWeight36 kgCertificatesVDE-AR-N 4105, VDE-AR-N 4110, EN 50549-1, etc.Item number853P033Safety & CommunicationThe REFUsol 33K-3T features an integrated DC load break switch as well as comprehensive protection mechanisms against DC reverse polarity, earth fault, overtemperature, overcurrent and overvoltage. Communication takes place via RS485, USB or Ethernet; a WiFi logger is available as an option. The integrated LCD display enables simple operation and displays all operating data in real time. Alternatively, monitoring can be carried out conveniently via the REFUview online platform.ConclusionWith high efficiency, robust construction and versatile communication options, the REFUsol 33K-3T is the perfect solution for medium to large-scale PV systems in the commercial and industrial sectors – a future-proof investment for sustainable energy generation.

The REFUsol 50K-4T is a highly efficient 50 kW string inverter with four MPP trackers and an efficiency of up to 98.8% – ideal for large commercial and industrial PV systems.More informationREFUsol 50K-4T – High performance for demanding PV projectsThe REFUsol 50K-4T impresses with state-of-the-art inverter technology and maximum flexibility. Thanks to its four independent MPP trackers (two DC inputs each), even complex roof or ground-mounted layouts can be optimally implemented. With an efficiency of up to 98.8% and a long-term overload capacity of 110%, it ensures maximum energy yield and reliable continuous operation under the most demanding conditions.Highlights4 independent MPP trackers (2 DC inputs each) for flexible string configurationsMax. efficiency: 98.8% / EU efficiency: 98.2%110% overload capacity for greater energy yieldCompact, robust IP65 housing with active coolingCommunication via RS485, USB, Ethernet or optional WiFi loggerIntuitive operation via LCD display; online monitoring via REFUviewIntegrated DC load disconnect switch and comprehensive protection functions10-year manufacturer’s warrantyTechnical data – REFUsol 50K-4TRated power (AC)50 kWMax. AC power55 kVARecommended PV outputup to 75 kWpMax. input voltage (DC)1100 VOperating voltage range (DC)180 – 1000 VMPP operating range540 – 850 VNumber of MPP trackers4 (2 inputs each)Max. current per MPPT40 AMax. short-circuit current50 AMax. output current (AC)83.3 AMains connection3P/N/PE – 230/400 V, 50/60 Hz (310–480 V range)THDi< 3 %Power factor1 (0.8 inductive ... 0.8 capacitive)TopologyTransformerlessProtection classIP65CoolingActive (fan-assisted)Dimensions (H × W × D)480 × 585 × 220 mmWeight37 kgDisplayLCDItem number853P050Warranty10 yearsSafety & CommunicationThe REFUsol 50K-4T features an integrated DC load break switch and comprehensive protection mechanisms against anti-islanding, DC reverse polarity, reverse current, earth fault, overtemperature, overvoltage and overcurrent. Communication is via RS485, USB, Ethernet or an optional WiFi logger. Remote monitoring and data analysis are possible via the REFUview platform. An integrated LCD display also enables convenient local operation.ApplicationsCommercial rooftop installations and carport systemsIndustrial and agricultural installations in the medium-power segmentGround-mounted systems with varying orientationsRepowering and expansion of existing PV systemsConclusionThe REFUsol 50K-4T combines maximum efficiency with high system flexibility and robust construction. The ideal choice for professional photovoltaic projects that prioritise reliability, future-proofing and maximum performance.

The REFUsol 110K-10T is an efficient 100 kW string inverter featuring ten MPP trackers, 150% DC derating and IP66 protection – ideal for large commercial and industrial installations.More informationREFUsol 110K-10T – Maximum efficiency and flexibilityWith its ten independent MPP trackers, the REFUsol 110K-10T offers maximum freedom in system planning – perfect for complex rooftop and ground-mounted configurations. Thanks to 150% DC derating and an efficiency of up to 98.6%, the inverter achieves optimal energy yields even in demanding projects. The robust IP66 housing, active cooling and comprehensive communication options ensure a durable and networked solution.Highlights10 independent MPP trackers for flexible system design150% DC overload capacity for maximum energy yieldEfficiency up to 98.6% / EU efficiency 98.3%Integrated PID recovery and AFCI protectionCommunication via RS485, USB, Ethernet or optional WiFiOnline monitoring via the REFUview platformIP66 protection rating, active cooling and low-noise operation (< 60 dBA)10-year manufacturer’s warrantyTechnical data – REFUsol 110K-10TRated power (AC)100 kWMax. AC power110 kVA (@ 45 °C) / 100 kVA (@ 50 °C)Recommended PV powerup to 150 kWpMax. input voltage (DC)1100 VOperating voltage range (DC)180 – 1000 VMPPT operating range500 – 890 VNumber of MPP trackers10Max. current per MPPT40 AMax. short-circuit current50 AMax. output current167.2 A @ 380 V / 159.5 A @ 400 VMains connection3P/N/PE – 380/400/415 V, 50/60 HzPower factor1 (0.8 inductive … 0.8 capacitive)TopologyTransformerlessProtection classIP66CoolingActiveDimensions (H × W × D)695 × 970 × 325 mmWeight75 kgItem number854P110Warranty10 yearsSafety & CommunicationThe REFUsol 110K-10T is equipped with an integrated DC switch, Type II surge protection (DC & AC), anti-islanding, DC reverse polarity protection, overcurrent and earth fault protection, as well as temperature monitoring. Communication is via RS485, USB, Ethernet or optional WiFi. All operating data can be conveniently monitored and analysed via the REFUview platform.ApplicationsCommercial rooftop systemsMedium-sized industrial installationsGround-mounted projects and carport solutionsRepowering and modernisation of existing systemsConclusionThe REFUsol 110K-10T combines maximum efficiency, flexible planning and modern communication technology. It is the ideal solution for specialist companies that value robust technology and easy integration into large photovoltaic systems.

The REFUsol 125K-10T is a highly efficient 110 kW string inverter featuring ten MPP trackers, 150% DC derating and IP66 protection – ideal for large commercial and industrial PV systems.More informationREFUsol 125K-10T – Maximum performance for large PV systemsThe REFUsol 125K-10T has been specially developed for large-scale commercial and industrial installations. With ten independent MPP trackers, up to 150% DC overload capacity and an efficiency of up to 98.6%, the inverter achieves excellent yields even under demanding conditions. The IP66 aluminium housing with active cooling ensures durability, safety and reliable operation in all weather conditions.Highlights10 MPP trackers for maximum flexibility in large installations150% DC oversizing for higher energy yieldsEfficiency 98.6% / EU efficiency 98.3%Integrated PID recovery & AFCI protectionCommunication via RS485, USB, Ethernet or optional WiFiOnline monitoring via the REFUview platformIP66 protection rating and active cooling for maximum reliability10-year manufacturer’s warrantyTechnical data – REFUsol 125K-10TRated power (AC)110 kWMax. AC power125 kVA (@ 45 °C) / 110 kVA (@ 50 °C)Recommended PV powerup to 165 kWpMax. input voltage (DC)1100 VOperating voltage range (DC)180 – 1000 VMPPT operating range500 – 890 VNumber of MPP trackers10Max. current per MPPT40 AMax. short-circuit current50 AMax. output current190 A @ 380 V / 181.2 A @ 400 VMains connection3P/N/PE – 380/400/415 V, 50/60 HzPower factor1 (0.8 inductive … 0.8 capacitive)TopologyTransformerlessProtection classIP66CoolingActive (fan-assisted)Dimensions (H × W × D)695 × 970 × 325 mmWeight75 kgItem number854P125Warranty10 yearsSafety & CommunicationThe REFUsol 125K-10T features comprehensive safety functions: integrated DC switch, Type II surge protection (DC & AC), anti-islanding, reverse polarity and earth fault protection, as well as overcurrent and temperature monitoring. Communication is via RS485, USB, Ethernet or optional WiFi. All performance and operating data can be monitored and analysed in real time via the REFUview platform.ApplicationsLarge commercial and industrial facilitiesOpen spaces with varying orientationsCarports, hall roofs and solar parksRepowering and modernisation of existing systemsConclusionThe REFUsol 125K-10T combines maximum efficiency, flexible configuration and future-proof communication. A reliable, high-performance solution for modern large-scale PV systems that require maximum energy yield and safety.

The REFUsol 350K-8T is a high-performance central inverter with eight MPP trackers, up to 99.05% efficiency and 1,500 V DC – ideal for large commercial and industrial installations.More informationREFUsol 350K-8T – Maximum performance for large-scale projectsThe REFUsol 350K-8T has been specially developed for use in large commercial and industrial PV systems. Eight independent MPP trackers with a total of 32 DC inputs (4 per MPPT) offer maximum flexibility for complex system designs. With an efficiency of up to 99.05% and a wide DC voltage range of 500–1,500 V, the inverter enables efficient system design and maximum energy yields.The robust IP66 enclosure, intelligent air cooling and comprehensive communication options make the 350K-8T the ideal solution for large PV parks, roof clusters and carport installations. Features such as AFCI, PID recovery and integrated surge protection modules (SPD Type II) enhance operational safety and system availability.Highlights8 MPP trackers with a total of 32 DC inputs (4 per MPPT)Max. efficiency 99.05% / EU efficiency 98.8%Integrated I-V curve scan & intelligent string protectionIntegrated AFCI (arc fault detection) & PID recoveryWide DC input range: 500–1,500 V / MPPT range 860–1,300 VIP66 protection rating with intelligent air cooling (< 60 dBA)Communication via RS485, USB, Ethernet/WiFi (optional) or integrated PLCLocal operation via LED & Bluetooth app, remote monitoring via REFUview10-year manufacturer’s warrantyTechnical data – REFUsol 350K-8TMax. AC power352 kVA @ 35 °C / 320 kVA @ 45 °C / 295 kVA @ 50 °CMax. output current (AC)254.1 ARated output voltage3P/PE – 800 V (range 640–920 V)Rated output frequency50/60 Hz (range 45–55 / 55–65 Hz)Power factor1 (0.8 inductive … 0.8 capacitive)Recommended PV powerup to 525 kWpMax. input voltage (DC)1,500 VDC operating range500–1,500 VMPPT operating range860–1,300 VNumber of MPP trackers / DC inputs8 MPPT / 32 inputs (MC4)Max. current per MPPT60 AMax. short-circuit current100 ATHDi< 3 %TopologyTransformerlessProtection ratingIP66Operating temperature−30 … +60 °CMax. operating altitude4,000 mDimensions (H × W × D)828 × 1,159 × 366 mmWeight113 kgDisplay / ControlsLED & Bluetooth appCommunicationRS485 / USB / Ethernet / WiFi (optional) / Integrated PLCItem number850P350Warranty10 yearsSafety & ConnectivityThe REFUsol 350K-8T offers comprehensive safety through integrated protection mechanisms against anti-islanding, DC reverse polarity, reverse current, earth fault, overtemperature, overvoltage and overcurrent. In addition, SPD Type II (DC & AC), AFCI and PID recovery are integrated as standard. Local operation is via LEDs and a Bluetooth app, whilst remote monitoring is conveniently possible via the REFUview platform.ApplicationsLarge commercial and industrial facilitiesOpen-space parks with multiple orientationsCarport and industrial roof clustersRepowering and expansion of existing PV systemsConclusionThe REFUsol 350K-8T combines maximum efficiency, advanced safety features and intelligent diagnostic options. A future-proof choice for large-scale professional PV projects that prioritise maximum performance, durability and connectivity.