Low Smoke Zero Halogen (LSZH)
Uses materials to aid human safety in the event of fire. Low smoke emission aids visibility and breathability during evacuation. Zero halogens are released when the cable is subjected to high heat sources and combustion, preventing the formation of toxic and corrosive gases. This is mostly used in marine applications and throughout Europe.
Uses materials to prevent fire propagation via the cable in the event of fire. CL3 is a general purpose standard suitable for vertical trays but not for more demanding situations such as risers and tunnels. Mostly used in North America.