ABB 1SDA123502R1 Moulded Case Circuit Breaker - IEC 60947-2

DC rated current and voltage: 50 A at 500 V DC with three poles provides dedicated protection for critical DC buses. This specification ensures the system remains protected under normal operation while allowing selective disconnection during faults, reducing downtime and equipment damage in drive and DC bus applications. In practice, engineers gain predictable fault isolation in automation cabinets and data-center DC rails, supporting reliable uptime and easier fault tracing. Front-terminal fixed connections: the design simplifies wiring during panel assembly and maintenance, speeding commissioning and reducing the chance of loose connections that can cause nuisance trips. In real-world installations, this translates to shorter installation windows and improved long-term reliability in crowded control cabinets. High impulse withstand and fault capacity: with an 8 kV rated impulse withstand and 36 kA short-circuit capacity, the device handles transients common in welding, drives, and renewable energy interfaces. This capability minimizes arc energy risk and enhances safety for operators and technicians during fault events. RoHS and REACH compliance with EPD support: the ABB EcoSolutions framework ensures sustainable procurement and regulatory compliance across global supply chains, reducing lifecycle risk for buyers. In practice, this means easier supplier qualification and a lower overall environmental impact while maintaining high protection standards. Mechanical durability and compact footprint: rated for 25,000 operating cycles with a compact 90 mm x 130 mm x 82.5 mm enclosure and a 1.2 kg weight, it fits modern control cabinets and retrofit projects without sacrificing protection quality. This longevity reduces maintenance intervals and lifecycle costs in high-usage environments such as packaging lines or machine trolleys.