How do cable tray systems improve fire safety in electrical installations?

Cable tray systems contribute to fire safety by supporting the segregation of power, control, and emergency circuits, which reduces the risk of fault propagation. Many designs incorporate metallic barriers or are constructed from low-smoke zero-halogen (LSZH) materials that limit smoke density and toxic gas emission during a fire, in line with IEC 61034 and IEC 62821 test protocols. Additionally, proper installation per IEC 60332 series helps control flame spread along cable bunches. This structured approach aids compliance with building codes that require maintaining circuit integrity for critical systems.