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SolarEdge Power OptimizersSolarEdge Power Optimizers Feature

A superior approach to maximizing the throughput of photovoltaic systems

The SolarEdge power optimizer is a DC/DC converter which is connected by installers to each PV module or embedded by module manufacturers, replacing the traditional solar junction box. The SolarEdge power optimizers increase energy output from PV systems by constantly tracking the maximum power point (MPPT) of each module individually. Furthermore, the power optimizers monitor the performance of each module and communicate performance data to the SolarEdge monitoring portal for enhanced, cost-effective module-level maintenance. Each power optimizer is equipped with the unique SafeDC™ feature which automatically shuts down modules’ DC voltage whenever the inverter or grid power is shut down.
The MPPT per module allows for flexible installation design with multiple orientations, tilts and module types in the same string.  When working with SolarEdge Inverters, SolarEdge power optimizers automatically maintain a fixed string voltage, allowing installers even greater flexibility with longer strings and strings of different lengths in order to design optimal PV systems. Alternatively, the new independent optimization (IndOP™) technology, allows power optimizers to be installed without the need for additional interface hardware and to operate directly with any inverter. The SolarEdge power optimizers are compatible with c-Si and thin-film modules and have a 25 year warranty.


  • Up to 25% increase in power output
  • Flexible system design for maximum space utilization
  • Next generation maintenance with module level monitoring and smart alerts
  • Unprecedented installer and firefighter safety
  • The most cost effective solution for residential, commercial and large field installations
  • Per-module Maximum Power Point Tracking (MPPT)
  • Superior efficiency (99.5% peak efficiency, 98.8% weighted efficiency)
  • Mitigates all  types of modules mismatch-loss, from manufacturing tolerance to partial shading
  • Designed for extreme environmental conditions
  • 25 year reliability and warranty
  • Advanced, real-time performance measurement
  • Automatic module DC voltage shut-down for installer and firefighter safety
  • Independent optimization technology (IndOP™) – allows operation with any inverter and requires no additional interface hardware (OPA models only)
  • Embedded by module manufacturers, or connected by installers to c-Si and thin-film modules

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Technical Data

OP250-LV OP300-MV/OP400-MV OP400-EV
Rated Input DC power (*) 250 300 / 400 400 W
Absolute Maximum Input Voltage (Voc) 55 75 125 Vdc
MPPT Operating Range 5 – 55 5 – 75 15-125 Vdc
Maximum Input Current (Isc) 10 10 7 Vdc
Reverse-Polarity Protection Yes
Maximum Efficiency 99.5 %
European Weighted Efficiency 98.8 %
CEC Weighted Efficiency 98.7 %
Overvoltage Category II
Output During Operation (Power Optimizer Connected to Operating Inverter)
Maximum Output Current 15 Adc
Operating Output Voltage 5 – 60 Vdc
Total Maximum String Voltage (Controlled by
Inverter) – US and EU 1-ph
500 Vdc
Total Maximum String Voltage (Controlled by
Inverter) – EU 3-ph
950 Vdc
Output During Standby (Power Optimizer Disconnected From Inverter or Inverter Off)
Safety Output Voltage per Power Optimizer 1 Vdc
PV System Design Using A SolarEdge Inverter
Minimum Number of Power Optimizers per
String (1 or More Modules per power optimizer)
8 (1-ph system) / 16 (3-ph system)
Maximum Number of Power Optimizers per
String (1 or More Modules per power optimizer)
Module power dependent; maximum 25 (1-ph system) / 50 (3-ph system)
Maximum Power per String 5250 (1-ph system) / 11250 (3-ph system) W
Parallel Strings of Different Lengths or
Standard Compliance
EMC FCC Part15 Class B, IEC61000-6-2, IEC61000-6-3
Safety IEC-62103 (class II safety), UL1741
Material UL-94 (5-VA), UV Resistant
RoHS Yes
Installation Specifications
Dimensions (WxLxH) 120x130x37 / 4.72×5.11×1.45 mm / in
Weight 450 / 1.0 gr / lb
Output PV Wire 0.95 m / 3 ft length ; 6 mm2 ; MC4 1.3 m / 4 ft length ;
6 mm2 ; MC4
Input Connector MC4 / MC3 / Tyco / H+S / Amphenol
Operating Temperature Range -40 – +65 / -40 – +150 ºC / ºF
Protection Rating IP65 / NEMA 4
Relative Humidity 0 – 100 %