They are certified in accordance with international explosion protection standards such as ATEX, IECEx, NEC, and others for safe and reliable signal and power distribution in Zone 1, Zone 2, Zone 21, Zone 22, or Class I and Class II, Division 2 hazardous areas. While fiber optics eliminate electrical ignition sources, fiber cables still require proper safety measures in explosive atmospheres. For instance, a broken. Pepperl+Fuchs offers a comprehensive range of terminal boxes and junction boxes in types of protection Ex e (increased safety), Ex ia (intrinsic safety), Ex tb (dust protection by enclosure), and Ex op pr (protected optical radiation). Up to 8 splice trays are installed inside the sturdy GRP enclosure. ·Special requirements on request.