Push-in Terminal Blocks Are Made Of Thermoplastic Polyester Material.

Thermoplastic polyester (PBT) is a commonly used engineering plastic in the insulating shell of push in connector block. PBT material possesses good dimensional stability and heat resistance, and when reinforced with glass fiber, it exhibits even higher mechanical strength and heat resistance. Other thermoplastic materials and reinforced nylon are also available, each with its own focus on electrical properties, thermal properties, and processing technology, thus providing a wider range of material combinations for push in terminals with clamping screws designs.

The construction of push in wire terminal block typically involves two main categories of materials: the metal conductor portion and the insulator portion. The metal conductor portion often uses highly conductive copper and its alloys to ensure good current conduction and contact stability; the insulator portion utilizes plastics such as PBT, forming a precise shell structure through injection molding, providing the basis for the electrical isolation and mechanical support of push wire terminal block.