ABB 1SDA054656R1 Accessory - Thermomagnetic TMA Trip Unit

Feature → Business Impact → Application: The 3P thermomagnetic release with TMA trip unit enables precise overcurrent protection for Tmax T assemblies, reducing fault propagation and downtime in critical power circuits. This translates to measurable reliability improvements in manufacturing lines and data centers, where short-circuit interruption costs escalate quickly. The accessory’s 125 A rated current supports mid-range distribution panels, delivering balance between protection and normal operating current for efficient energy use across industrial plants. The flexible installation—loose or configurable—simplifies retrofits and upgrades in existing frames without extensive wiring changes, improving project timelines and maintenance planning. Compatibility with Tmax T, RoHS and REACH compliance, and CE documentation address regulatory requirements, reducing procurement risk and ensuring downstream audits pass smoothly. Using this accessory supports standardization across SACE Tmax T families, lowering spare parts complexity and inventory costs. Industry context indicates that thermomagnetic protection is essential for motor control centers and process automation where motor inrush and fault currents demand fast disconnects. The result is better uptime, safer operations, and longer equipment life in demanding environments.