Hammond Manufacturing Commercial Electrical Enclosures with Knockouts

Hammond Manufacturing Commercial Electrical Enclosures with Knockouts are ideal for commercial building construction and light industrial needs. These UL-listed enclosures are available in several NEMA ratings, including Type 1 and Type 3R. The Type 1 enclosures are suitable for use as a junction, pull, or switch box in general-purpose indoor commercial applications, while the Type 3R junction boxes provide protection against rain, sleet, snow, and dripping water. Hammond Manufacturing Commercial Electrical Enclosures feature knockouts on the bottom of the enclosure or on all four sides for design flexibility.

NEMA Standards

•   NEMA Type 1
                      ○       Indoor use to provide protection to personnel against access to hazardous parts
                      ○       To provide protection of equipment inside enclosure against ingress of solid foreign objects (falling dirt)
•   NEMA Type 3R
                      ○       Enclosures constructed for indoor or outdoor use to provide protection to personnel against access to hazardous parts
                      ○       To provide protection of equipment inside enclosure against ingress of solid foreign objects (falling dirt)
                      ○       To provide protection with respect to harmful effects on equipment due to ingress of water (rain, sleet, snow)
                      ○       And that will be undamaged by external formation of ice on enclosure