Quick lil exploit to push some life into this section.
The game intends meele classes to "hit" a fusebox (that thingys which explode to damage/stun trashpacks) on meele range. If yo're eg an assasin and forcelighting it instead, you'd lose a cooldown.
Well, just bind any range attack to hotkey "1" and rightclick the box while having the corresponding range for the spell. I got the jump on "1" on my marauder and so trigger the boxes from 30y without loosing the cooldown. shouldn't be intended ;D