One of the most consistent questions that Bud Industries receives deals with the best materials for a NEMA or IP rated enclosure. Bud provides Nema and IP rated boxes in almost every material including steel, stainless steel, abs plastic, polycarbonate, fiberglass and die cast aluminum. In the last few years, we have added an interesting combination of polycarbonate and fiberglass (10%) that is becoming increasingly popular for many good reasons. This combination offers many advantages over both polycarbonate and traditional fiberglass materials when utilized for electronic enclosures.
Fiberglass is typically stronger than polycarbonate but because of the glass fibers it can crack upon impact. Polycarbonate is much less likely to crack. By adding a relatively small amount of glass fibers, the enclosure gains significant strength but still is basically crack resistant. This makes this product especially useful in a factory or other environment where the box may be more likely to receive impacts from other materials or equipment.