Based on this product's specifications, here are some alternatives and similar models
Circuit breaker Legrand Tx3 B20A 3-pole 6kA
Summary description:
Legrand Tx3 B20A is a 3-pole circuit breaker with B characteristic and 20 A nominal current, rated short-circuit breaking capacity 6 kA. Designed for protection of three-phase circuits against overloads and short circuits in residential and light commercial installations. Fits standard DIN-rail panels and provides reliable upstream protection for circuits and equipment.