The ZCB panelboards are engineered to control electrical equipment and branch circuits, while offering short circuit protection within petrochemical refineries, chemical processing plants or other Zone 1 and Class I, Div. 2 hazardous locations. The panelboards install hassle-free and feature worker safety and maximum durability with their nonmetallic, corrosion-free static-resistant fiberglass reinforced polyester housings, a 316 stainless steel hardware, protective flanges on top and bottom, pad-lockable, double bar locks and individually lockable breakers. Their design is completely wired for easy field termination to standard blocks. Also available are five enclosure sizes with additional options such as the 316 SS enclosures, transparent operator covers, LED indicator lights, a NEMA 4X drain/breather and back panel mounted breakers.