It is very important for large solar PV systems to suitability select the DC isolation components including DC isolators and string combiner boxes to keep the high voltage DC side safe and secure. Based on AS 5033:2014 and further amendment to it clearly describes the requirement for DC isolator selection.
It is important that they should have the capacity of making and carrying currents in normal circuit conditions and in specific overload conditions, apart from their standard voltage withstanding requirements.
ecologiq can provide in-depth design for your next solar project/in-depth review for your solar project design including detailed DC schematics and best string/array configurations considering the various aspects in the design process.