Wylex REC4 Four Pole Isolator Switch 100A Insulated Enclosure\r\n- Wylex 4 Pole 100A Main Isolator Switch.- Compact design.- Insulated plastic enclosure.- 50mm terminal capacity.\r\nThe Wylex REC4 is a stand-alone 100A four-pole isolator switch with an insulated plastic enclosure. Unlike terminal blocks, this 4 module isolator is specifically designed to prevent interference or additional tap offs, with a two-part cover that can be sealed to only allow access to the installer and supply authority.