ABB 1SDA123637R1 Moulded Case CB - 750V DC 3P

High-current capability: The 630 A rated current supports dependable DC protection across heavy panel feeders, reducing nuisance trips in 3P DC circuits. This translates to fewer unscheduled shutdowns and improved line efficiency in manufacturing lines, energy storage systems, and motor drives. Voltage and insulation: With a 750 V DC rating and 1000 V insulation capability, designers can simplify panel layouts and reduce the need for extra busbar components. It also contributes to safer, more reliable operation in harsh environments. Short-circuit endurance: I_cs values up to 35 kA (250 V DC, 2P in series), 25 kA (500 V DC, 2P in series), and 18 kA (750 V DC, 3P in series) provide clear protection margins, while I_cu up to 70 kA (250 V DC) or 36 kA (750 V DC) accommodate varying fault conditions. This strengthens system resilience in critical applications. Efficiency and durability: A power loss of 34.4 W per pole reduces heat and cooling demands, improving overall efficiency in large DC switchgear. Mechanical durability of 20,000 cycles ensures long service life in frequent operation scenarios, delivering lower maintenance costs. Installation and compatibility: The fixed-terminal design simplifies mounting in standard switchgear frames, supporting fast deployment and straightforward replacement of legacy devices. The XT6 platform aligns with existing XT6S 800 DC configurations, ensuring compatibility across modern DC protection schemes. Environmental and compliance benefits: ABB EcoSolutions support recycling and end-of-life disassembly, while the product is documented for REACH and RoHS compliance and CE conformity, helping meet corporate sustainability and regulatory requirements. In practice, customers gain predictable protection, easier lifecycle planning, and reduced total cost of ownership for DC distribution networks.