[RE-wrenches] Recommendation on DC Breaker

[Nick A Lucchese]

The Siemens HNF361RPV is worth looking into. Quite affordable and reliable build quality without having to resort to Amazon. It first appears that it’s limit is 250 vdc but the footnotes indicate 600 once going deeper into the details. Obviously not a fuse though.

Nick



> On Jan 18, 2024, at 7:59 AM, Jason Szumlanski via RE-wrenches <re-wrenches at lists.re-wrenches.org> wrote:
> 
> Thanks, all, for the quick recommendations. I believe an isolator like the IMO is technically all that is needed since it is a current limited circuit and OCPD shouldn't be required, but the manual calls for a circuit breaker. That is probably just a semantics issue. 
> 
> On the other hand, the 1000V DIN rail breakers on Amazon are a dead cheap option and worth considering, too.
> 
> Jason Szumlanski
> Principal Solar Designer | Florida Solar Design Group
> NABCEP Certified Solar Professional (PVIP)
> Florida State Certified Solar Contractor CVC56956
> Florida Certified Electrical Contractor EC13013208
> 
> 
> On Thu, Jan 18, 2024 at 10:48 AM Jay via RE-wrenches <re-wrenches at lists.re-wrenches.org <mailto:re-wrenches at lists.re-wrenches.org>> wrote:
> I’d use an IMO disconnect as you don’t have any current limitations. 
> 
> I think sometimes things get lost in translation. 
> 
> Jay
> 
> 
> 
>> On Jan 18, 2024, at 8:43 AM, Jason Szumlanski via RE-wrenches <re-wrenches at lists.re-wrenches.org <mailto:re-wrenches at lists.re-wrenches.org>> wrote:
>> 
>> 
>> I am installing an EG4 off-grid 3k inverter for the first time, and the manual requires a DC circuit breaker on the PV input. It will be a small PV array with adjusted max Voc around 280V @ Isc 10.6A.
>> 
>> I'm looking for a cost-effective DC breaker and enclosure for this purpose.
>> 
>> Jason Szumlanski
>> Principal Solar Designer | Florida Solar Design Group
>> NABCEP Certified Solar Professional (PVIP)
>> Florida Certified Solar Contractor CVC56956
>> Florida Certified Electrical Contractor EC13013208
>> 
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