ABB 1SDA123516R1 Moulded Case Circuit Breaker - IEC 60947-2

Four-pole fixed circuit-breaker with front terminals reduces wiring complexity and speeds panel assembly, delivering measurable time savings on installation projects. The design lowers enclosure depth, minimizes wiring errors, and simplifies field testing, making it well-suited for DC power distribution in manufacturing lines and process plants. It also improves spares planning by using a standard footprint and consistent mounting pattern across installed bases. Thermomagnetic release (TMA) provides accurate overcurrent protection for DC circuits, improving trip selectivity and reducing nuisance trips during startup transients. In critical applications such as motor drives, battery charging panels, and data-center power rails, this translates to higher uptime, safer equipment startup, and easier regulatory documentation for fault analysis. The front-terminal layout further simplifies wiring changes during panel refreshes. Rated current 100 A and rated operational voltage 500 V DC, with a rated insulation voltage of 1000 V and an impulse withstand of 8 kV, give robust protection for medium-load DC networks. The 4P construction supports balanced protection of multiple conductors, while fixed mounting ensures stable contact integrity in vibration-prone environments such as manufacturing lines. This combination reduces maintenance interventions and extends service life. High short-circuit ratings, with Ics and Icu of 36 kA in the specified configurations, enable reliable interruption of DC faults and cohesive coordination with upstream breakers. This capability reduces the risk of cascading outages in scalable DC grids and supports faster recovery after faults, improving overall plant reliability and uptime metrics. IEC 60947-2 and GB/T 14028.2 compliance, RoHS and CE declarations, plus EPD and disassembly instructions under ABB EcoSolutions, simplify regulatory qualifications, sustainability reporting, and end-of-life planning. For OEMs and contractors, this means smoother audits, more transparent supplier assessments, and alignment with corporate sustainability targets without sacrificing protection performance. Front-terminal fixed mounting and a compact net size of 120 mm wide by 130 mm high by 82.5 mm deep, with a weight of 1.6 kg, support easy integration into existing panels and cabinets. Power loss of 8.08 W per pole under rated conditions helps thermal management teams model heat dissipation accurately, minimizing cooling costs and enabling denser, more efficient installations.