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Inverter MCCB & RCCB Recomendations

Inverter MCCB & RCCB Recomendations

Inverter MCCB & RCCB Recomendations

(OP)
Dear All

This is my first post in your reputable site , i am a PV supervision and project manger .

so i have a question regarding the use of a 3-pole or 4-pole RCCB , MCCB with SMA STP60 inverter , from my knowledge the inverter is delta connected ( 3 phases and ground terminals ) and since we have no neutral this means that we can use the 3-pole breakers instead of a 4-pole breakers is this applicable with the TT and TN-C grid configration ? usually with Y connected inverters like the STP 25000 we use a 4 pole breakers and .3A RCCB sensitivity.

Thanks Alot

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