Professional-grade UTL Factory Screw 4mm² Wired Wire Electrical Connectors ensure secure and efficient electrical connections. Precision-engineered from high-conductivity copper with a durable tin-plated finish for corrosion resistance. Features a compact DIN rail design for easy installation in industrial control panels and automation systems. Flame-retardant PA66 housing withstands temperatures up to 105°C for superior safety. Spring-loaded cage clamp mechanism allows tool-free wire insertion while maintaining vibration-proof contact. Ideal for building electrical distribution systems, machinery wiring, and renewable energy applications. Complies with international electrical standards for reliable performance in commercial and industrial environments. Bulk packaging available for large-scale electrical projects and contractor use.