It is possible to connect a terminal lug with a bigger hole than the switch-disconnectors has, and it works with any brand that Weidmüller uses in its PV combiner boxes. For this it’s important to remember the composition of the elements that will be needed for its properly connection: 1 screw, 2 washer and 1 nut. For more information about the maximum cable size that you can use with the switch-disconnector or if its possible to connect the cable to the switch-disconnector with a terminal made of aluminium, please read this fact sheet.