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Heat Dissipation from the SmartSolar-MPPT-250/100

Dear All,

I am designing an Off-Grid Solar Power System to be installed in an ATEX Certified Boxes (SS 316, 25mm thickness, IP 65). The system will require 2 x MMPT 250/100 charge controllers installed inside one box (approx. 1200 x 800 x 300 mm) and running at an ambient temperature of 50 Deg. C.

I know that the charge controller will de-rate as the temperature goes up. what I don't know is what are the heat dissipation figures for these controllers and couldn't find it anywhere in the Victron literature.

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