What does the LSZH designation mean and why is it important?

LSZH stands for low-smoke zero-halogen, indicating that the cable sheath emits minimal smoke and no corrosive halogen gases when exposed to fire. This vastly improves occupant visibility during evacuation and prevents secondary damage to sensitive equipment and building structures from acidic combustion byproducts, aligning with stringent modern building codes, IEC 60754 halogen content requirements, and IEC 61034 smoke density standards.