Based on this product's specifications, here are some alternatives and similar models
Surge Protector Noark 112894 Type II 1200V DC 3-module for unearthed systems SPD Ex9UEP 20 3P
Summary description:
Surge protector Noark 112894 (Type II) is a 3-module DC protector rated for 1200 V DC designed for unearthed (isolated) systems. Identified as SPD Ex9UEP 20 3P, it provides overvoltage suppression in photovoltaic and other DC installations where earthing is not used, fitting standard DIN-rail switchgear and distribution enclosures.