
Enclosure Rain Hoods

Enclosure rain hoods are mainly used to protect thermal accessories, usually fans, installed on the outside of electrical enclosures from snow, rain or sleet. Rain hoods can also be installed on top of flat roof electrical enclosures. This can help to prevent the build up of liquids, dirt, dust, minerals and debris. If corrosive solids and liquids are allowed to build up on top of an enclosure, the integrity of the coating and material may be compromised, which can lead to corrosion and liquid and debris entering the enclosure.
Pfannenberg Rain Hoods are designed to be used with existing Pfannenberg Filterfans and Exhaust Filters. The smooth, seamless design allows for easy wash down and disinfection. The direct spray barrier design prevents overspray from entering the enclosure while minimizing airflow loss. The rain hoods come in different sizes and are rated NEMA Type 3R, 4, 4X and IPX6 when used with Pfannenberg Filterfans. Options include painted galvanized steel, stainless steel and FDA compliant food and beverage grade versions.
Saginaw 4X Rain Hoods are designed to be used with Type 12 Fan and Filter Packages to increase the ingress protection of the assembly to a 4X. Sanitary FDA compliant gaskets make it easy to detect contamination and the removable hood allows for tool-free maintenance and replacement of filters.
Products
Electrical enclosures are cabinets that are designed to house electrical components. Their main function is to protect the components, as well as to protect the operators from electrical hazards. Enclosures are typically made of solid plastics, fiberglass and metal materials, such as carbon steel, stainless steel and aluminum.
One of the most important things to consider when selecting an electrical enclosure is the NEMA rating. NEMA stands for National Electrical Manufacturer Association. They have developed a rating system which determines the types of environments an electrical enclosure can be used in.
NEMA 3R enclosures. The NEMA definition of a 3R enclosure is as follows: ‘Enclosures constructed for either indoor or outdoor use to provide a degree of protection to personnel against access to hazardous parts, to provide a degree of protection of the equipment inside the enclosure against Ingress of solid foreign objects such as falling dirt, to provide a degree of protection with respect to harmful effects on the equipment due to the Ingress of water, rain, sleet or snow, and that will be undamaged by the external formation of ice on the enclosure.’ NEMA 3R enclosures provide adequate outdoor protection while providing significant cost savings over NEMA 4 and NEMA 4X enclosures.
NEMA 4 enclosures. They provide all of the same protections found in the NEMA 3R enclosures with two additional protection elements, protection against wind-blown dust particles and protection against hose directed water. NEMA 4 enclosures provide this additional protection using a gasket material to prevent water or dust from entering the enclosure,
while the NEMA 3R enclosures rely on enclosure design and gravity to assist in diverting water and dust.
NEMA 4X enclosures. They provide all of the same protections found in the NEMA 4 enclosures with one added protection element, corrosion resistance. NEMA 4X enclosures are typically made of either stainless steel or fiberglass.