ABB 1SDA123550R1 Moulded CB - IEC 60947-2

DC current handling and pole configuration matter for reliability in automation panels. The 125 A rated current with a fixed 3P configuration and front-terminal connections provides straightforward wiring and secure termination, reducing field connection errors and enabling faster panel builds for manufacturing environments. This means improved line uptime and predictable protection for critical DC circuits in automated systems. The unit delivers 8 kV rated impulse withstand (Uimp) and 1000 V rated insulation voltage (Ui), ensuring robust surge protection against switching transients common in aerospace, robotics, and process control applications. With an 11.4 W power loss per pole, designers can achieve better energy efficiency in continuous operation and lower thermal stress in control cabinets. The 3P fixed-breaker format supports reliable, space-efficient installation in compact automation panels while maintaining compatibility with front-terminal wiring practices. The device also demonstrates strong short-circuit performance (Ics/Icu up to 85 kA at 250/500 V DC), enabling safe operation across demanding DC networks. Mechanical durability at 25,000 cycles and a cadence of 240 cycles per hour translate into lower maintenance costs and longer service life, essential for high-availability applications in manufacturing and infrastructure. RoHS and REACH compliance, along with ABB EcoSolutions principles and an End-of-Life program (disassembly guidance), help optimize total cost of ownership and support sustainable procurement. The product’s dimensions (90 mm width, 130 mm height, 82.5 mm depth) and 1.2 kg weight make it a practical fit for retrofit projects and new installations alike, delivering a compact yet robust protection solution for modern electrical protection and circuit control needs.