This is the Wylex NHXLB40 Miniature 40A rated - MCB Type B Single Pole Single Module, 6kA 1 Module. These would fit the Wylex fixed busbar boards having a "L" at the end, or any Flexi boards (with a busbar), including the Wylex NMX range. Not
Please note: this is the NEW style Wylex MCB which fits the new Wylex boards; they are not suitable for the old Wylex boards unless they have a "L" at the end of their code.
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