[RE-wrenches] Outback MX60 Replacement

[Christopher Warfel]

Hi Jason, I have the same set up. These are the array and cc breakers.  
Although we are having a power outage right now, the DC shunt is doing 
its usual crazy reading from time to time.   Chris


On 4/18/2025 8:35 AM, Jason Szumlanski via RE-wrenches wrote:
> Hi all,
>
> I have a client that wants to replace a PV array that is aging and 
> hurricane damaged. It's a rather old array of unknown rating connected 
> to a MX60 via a Flexware 500 DC enclosure (48V).
>
> I'm planning to install eight REC 450 Alpha Pure RX in series. I'm 
> going to need a 600 volt charge controller. I'm considering a Midnite 
> Hawk's Bay unless someone has a better idea.
>
> The customer sent me this crude image. I can see the two inverter 
> breakers on the right. I am wondering what the two breakers on the 
> left are. I'm thinking one of these is an 80 amp breaker for the 
> output of the MX60. The other one is probably a PV input breaker of 
> unknown rating. I would need to change these to accommodate the new 
> charge controller. The Midnite Hawk's Bay 90 requires a 125A output 
> breaker. Does anyone know if there is an Outback breaker of this 
> physical size and 125A rating to plug into this DC FlexWare enclosure? 
> For the PV input, I should be able to get whatever breaker is required 
> for this single string of PV.
>
> I'm all ears if there is an easier way to go about this with 
> approximately 3,600W of new PV.
>
> Thanks in advance!
>
> Jason Szumlanski
> Florida Solar Design Group
>
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-- 
Christopher Warfel, PE
ENTECH Engineering, Inc.
PO Box 871, Block Island, RI 02807
(401) 447-5773
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