With protection class IP66, they are dustproof and protected against strong water jets—ideal for outdoor use, damp rooms, industrial facilities, or EV charging stations. The enclosures are lockable and come with a key. The integrated DIN rails and grounding strips ensure easy and. Function: This distribution box is waterproof and dustproof and protects your electrical system from possible water damage. Versatile size options: Available in a range of sizes, this junction box can meet your specific distribution needs.