Trends In Insulator Selection And Halogen-free Materials For Push-in Terminal Blocks

For push in terminal, using halogen-free materials as insulators has become an important development direction because such materials do not release halogen-containing toxic gases when burning, can meet stricter safety and environmental standards, and meet multiple performance test requirements.

Common plastics in halogen-free material systems, such as modified polyamides (e.g., PA66) and polycarbonates, provide the necessary insulation properties while typically achieving a UL94V-0 flame retardancy rating, making them suitable for demanding electrical equipment environments. These thermoplastic materials also possess high mechanical strength and thermal stability.

Another reason for push in type terminal block's shift towards halogen-free materials is the regulatory and market demand for low smoke emissions. Halogen-free insulators produce less smoke in fires, improving evacuation conditions and the firefighting environment, thus supporting overall fire protection strategies for electrical installations.