Based on this product's specifications, here are some alternatives and similar models
Busbar copper 30x10x995 mm 4‑pole 630 A Polot UM34B
Summary description:
Copper collection busbar with dimensions 30 x 10 x 995 mm, 4‑pole configuration and rated current 630 A. Designed for use in electrical distribution panels and switchgear to interconnect protective devices and feeders. Provides a compact conductive link for power distribution and grounding in industrial, commercial and residential installations.