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MP-303S PV Load Selector

Make: Eko                                      Model: MP-303S
✅ PV cells and modules up to 3000W
✅ To be combined withl MPPT tracker
✅ 6 input channels
✅ Switching capacity 400V / 20A

To test the long-term stability of PV modules, particularly with EKO’s MP-165-based outdoor test system, the I-V characteristics of multiple PV cells and modules can be measured. The MP-165 in combination with the MP-303S Load Selector provides 6 channels to measure IV curves of PV modules, which can be kept at MPPT conditions with an optional load. The load could either be a passive load, an electronic load, or a power optimizer that is connected to the inverter and grid. In total, 8 units of the MP-303S can be connected to the MP-165.

Application and features of MP-303S PV Load Selector:



✅ Solar protection applications
✅ Waterproofness
✅ Thermal Insulation
✅ Air pre-heating and ventilation
✅ Hot water production
✅ Photovoltaic power production
✅ Switching capacity 400V / 20A
✅ x6 input channels
✅ Compatible with the MP-165 I-V Tracer




Measurement range Voltage

0.05 – 400 V

Measurement range Current

0.005 – 20 A

Measurement range Power

0 – 3000 W

Operating temperature range

0 – 40 °C

Power supply

100 – 240 VAC, 30W

Dimensions mm

370 (W) x 350 (D) x 133 (H)


12 kg

Ingress protection IP

Input channels #


Max. devices #


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