The NEMA 4X definition, as established by the National Electrical Manufacturers Association, is a rating for an outdoor electrical enclosure that has the following protective qualities:
Includes a gasket designed to protect against liquid and solid ingress;
Suitable for indoor or outdoor use;
Resistant to corrosion;
Protects against water ingress from rain, sleet and snow;
Protects against solid ingress from airborne dust, debris, fibers, dirt and other foreign objects;
Protects against damage from ice forming on the outside of the enclosure.
The EP Cube is only compatible with EP Cube Battery module only, maximum 6 battery modules can be installed. Connection with battery modules from other brands is not supported.