Simple armor question

[Fyron]

Each component of armor acts as a separate component of armor. 3 Armor IIIs count as 3 Armor III components. Emissive Armor is more advanced armor that becomes available with Armor 4-6 technologies. It has an ability that reduces damage taken by the ship (once shields are down). This special damage reduction ability is what does not stack, so 3 Emissive Armor I components have the same damage reduction applied per shot as 1 Emissive Armor I component. Extra components are useful in case the first Emissive Armor I component is destroyed, as there is still some Emissive Armor left to reduce damage.