Coupling for industrial applications in accordance with IEC 60 309 (EN 60 309) IEC 309 HP series with SAFE-LOCK locking system, nickel-plated contacts, metal parts made of stainless steel, plastic parts halogen-free in accordance with EN 50 267-2-2, cable entry as cable gland with integrated strain relief, connection technology: screwless tension spring terminal, connection cross-section 1 - 2.5 mm² fine-stranded / 1.5 - 4 mm² single or multi-stranded, UV resistant, shock resistance IK09