The strings are connected in a string box, which is installed between the PV array and the SunMaster CS inverter. The high DC loads and currents require top quality and safe components. The varistors in the StringMaster reduce the risk of lightning strike damage to the PV array, cables and inverter.
Choose breaking capacity: In > Isc x 1.56. Example: Isc = 7.95 A --> 7.95 x 1.56 = 12.4 --> next higher rating --> choose 15 A fuse.
StringMaster fuses are marked with the ‘gPV’ and ‘’ symbols, showing compliance with IEC60269-6. Use of non-compliant fuses is prohibited as it may lead to severe damage or even fire.
-20 °C till 50 °C
|Safety class||class II|
600 x 400 x 130 mm
23.6 x 15.7 x 5.1 inch
|Product warranty||5 years|
|Max. voltage Uoc||1000 V|
|Max. DC current (up to 600 V)||40 A|
|Max. string input||2x 5|
|Connections input||screw clamp up to 10 mm²|
|Connections output||screw clamp up to 35 mm²|
|Fuses (positive & negative ends)||4-15 A (10 dummy fuses included)|
|Overvoltage protection||1000 V; type ll|
|Cable entry||DIN cable glands M16/M25|
|Relative humidity||max. 100%; non condensing|