Is FR4 Sheet Good For Switchgear?

Switchgear insulation is not only about separating live parts. The material must also support mechanical fixing, resist tracking risk, stay stable near heat, and reduce flame spread risk inside a compact electrical cabinet. FR4 glass epoxy sheet is often a practical choice because it combines woven glass fiber reinforcement with epoxy resin, giving the sheet strength, rigidity, insulation performance, and flame retardant behavior.