ABB 1SDA123564R1 Moulded Case Circuit Breaker - IEC 60947-2

Three-pole DC protection with XT2 sub-type provides precise selective tripping, reducing downtime on DC distribution networks. This feature delivers improved system reliability and safer fault isolation for automation cabinets, enabling faster maintenance and minimized production impact. The 20 A rating at 500 V DC supports direct integration with standard DC buses, simplifying panel design and reducing part-number proliferation while delivering consistent protection against overcurrent and short-circuit events. Ics of 100 kA (250 V DC) and 50 kA (500 V DC) support high fault withstand capability, enabling safer operation in fast-moving automation lines and data-center style DC rails. The compact footprint (90 mm width, 130 mm height, 82.5 mm depth) with fixed terminals simplifies installation, reduces cabinet depth requirements, and speeds up wiring, commissioning, and future upgrades. ABB EcoSolutions adds end-of-life guidance, printed instructions, and a design-for-closing resource loop, improving total cost of ownership while supporting circular economy goals. The device’s mechanical durability of 25,000 cycles and 1.62 W power loss per pole translate to long service life with predictable thermal performance in demanding industrial environments. This combination of standards compliance (IEC 60947-2) and modular XT2 XT2 TM architecture makes it well-suited for control panels, drive interfaces, and DC distribution blocks in manufacturing and process automation.