[RE-wrenches] 48 V DC temp sensing relay

[drake.chamberlin at redwoodalliance.org]

William, 

I'm planning to use a 48 V battery vent fan, turned around backwards, to
blow air into the box. 

Thank you, 

Drake 

_Drake Chamberlin_ 

_Athens Electric LLC_ 

_Ohio Electrical Contractor's License 44810_ 

_NABCEP Certified PV Installation Professional_

---

On 2023-12-13 11:25, William Miller via RE-wrenches wrote:

> Drake: 
> 
> I tried running 48 VDC muffin fans on battery voltage. They failed. I switched to a Dc-Dc converter (12 or 24, can't remember) from digi-key and problem solved.  
> 
> Point being battery voltage ranges may be too extreme for some components. 
> 
> William Miller
> Miller Solar.com
> 805-438-5600
> www.millersolar.com [1] 
> 
> On Wed, Dec 13, 2023 at 8:08 AM Drake Chamberlin via RE-wrenches <re-wrenches at lists.re-wrenches.org> wrote: 
> 
>> Hello, 
>> 
>> Does anyone know of a 48 VDC temperature sensing relay? I need to use one to control a fan in a 48 V battery bank, to bring in cold air when the bank gets too hot from the wood heating system in the house. 
>> 
>> The relay needs to operate with the 48 VDC power supply and disconnect a small current with 48 VDC contacts. 
>> 
>> Thank you, 
>> 
>> Drake 
>> 
>> _Drake Chamberlin_ 
>> 
>> _Athens Electric LLC_ 
>> 
>> _Ohio Electrical Contractor's License 44810_ 
>> 
>> _NABCEP Certified PV Installation Professional_ 
>> 
>> -- 
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Links:
------
[1] http://www.millersolar.com
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