The ABB 2CDS273001R0324 S203M-C32 is a 3-pole miniature circuit breaker from the System Pro M Compact S200M series, rated 32A with a Curve C trip characteristic.
The 12V DC rating covers control-circuit applications, though the DC breaking capacity is typically lower than the AC figure — verify the DC rating curve for your specific voltage and time constant.
Mounts in standard DIN-rail distribution boards alongside other S200M series devices. The 3-pole form factor suits three-phase branch circuits, and the compact width (3 modules at 17.5 mm each) leaves room for additional protection or control components in the same enclosure.