Why Is The Industry Trend Towards "halogen-free Flame-retardant" For Push-in Terminal Blocks?

The flame retardant materials used in push in wire terminal block typically employ halogen-free formulations, a trend stemming from the industry's comprehensive consideration of environmental protection and safety performance. Halogen-free flame retardant materials do not produce large amounts of halogen-containing toxic gases under combustion conditions, thus improving air quality in fire environments. These materials often meet UL 94 V-0 flame retardant ratings and comply with safety testing standards for electrical products.

For push wire terminal block, the selection of insulating plastics should not only consider electrical insulation properties. Materials such as polyamides (e.g., PA66) and polycarbonates, in halogen-free systems, must meet low-smoke and flame-retardant performance requirements. Halogen-free flame retardant systems improve the flame suppression capability of materials by adding halogen-free flame retardants (e.g., phosphorus compounds) without introducing halogen elements.