The R. STAHL 8570/12 series SolConeX plugs for Zone 1/21 are 3, 4 or 5-pole versions up to 16 Amp. They are easy and simple to plug and unplug thanks to floating pins. The pivoting strain relief makes it easier to install the cable. Self-cleaning and corrosion-free plug pins made from high-quality materials ensure optimum electrical contact.