Push-in Terminal Blocks Achieve Ul94 V-0 Flame Retardant Rating Through Materials And Design

push fit terminal block connector typically uses special thermosetting or thermoplastic engineering plastics as insulators, which can achieve a V-0 rating in vertical flame tests. Commonly used industrial materials such as PA66 (nylon) or certain reinforced polycarbonate materials, under specific formulations, are classified as UL 94 V-0 after standardized testing. Such materials extinguish rapidly and limit combustion spread when exposed to a flame source.

The overall structural design of push in connector block must also meet relevant electrical and safety specifications, which often require push in terminals with clamping screws to maintain stable flame retardant performance under rated voltage and temperature conditions. Therefore, heat-resistant and flame-retardant raw materials are considered in the initial design phase, forming a complete testing and verification process.