Selecting the proper enclosure might seem like a casual task. Actually, it is a critical decision that can impact project costs, timelines, and the ultimate success of your product or application.
The success or failure of a project can hinge on whether there is adequate protection from an enclosure for its environment and application. On the other hand, over specifying the level of protection adds unnecessary cost. For example, if your application requires protection against factory washdowns, then you don’t need an enclosure rated for immersion, which may be more expensive. As an enclosure can make up a significant portion of your bill of materials, the cost can be significant.
Challenges arise when selecting a NEMA enclosure box because of the ambiguity of terms such as “waterproof,” “sealed,” or “dust tight.” Does the term “waterproof” mean the enclosure can withstand full immersion in a liquid, or does it refer to rain? Does the term “sealed” refer to an airtight enclosure or one that guards against larger debris?
NEMA ratings give precise definition to the level of protection.
Bud’s broad line includes models across the full range NEMA electrical enclosure ratings. NEMA 4 and NEMA 4x are the most common and trusted ratings for outdoor and factory washdown locations. For a junction box, a basic NEMA 1 enclosure may be sufficient. NEMA 6P indicates that the enclosure is temporarily submersible.