Is a bigger enclosure enough or is venting required?
GlennD wrote:Contactors typically draw about 15W so they need airflow. A small box will likely cause excessive temperatures. Many times the contractor is placed in airflow and never gets hot. The outside half of an air conditioner is like that.
I think you have to calculate the heat, it might require a big enclosure with venting or even air condition enclosure. Which rating standard are you using? NEMA rating or IP standard? I found this site might be valuable if you looking for NEMA electrical enclosures. They provide many types and design including addon features like hinges, couplings, wheels, air condition, and many more. My company did order from them recently and everything worked out fine. https://www.nemaco.com
, to study for type and protection recommend study from https://www.nema.org/pages/default.aspx