Based on this product's specifications, here are some alternatives and similar models
Busbar Rittal SV 9640.360 — copper housing, pack of 3, model 9640360
Summary description:
Rittal SV 9640.360 is a copper-housed busbar assembly supplied in a pack of three. Constructed with copper material for conductive housing, this component is intended for electrical distribution and grounding applications within switchgear or enclosure systems. Suitable for installations requiring reliable conductive connections and corrosion-resistant copper housing.