ABB 1SDA068058R1 Thermal Magnetic Circuit Breaker

ABB 1SDA068058R1 is a SACE Tmax XT3N molded case circuit breaker (MCCB) with a thermal-magnetic release, engineered to protect transformers, generators, and electrical installations within medium-voltage distribution systems. It is a 3-pole, front-terminal device in the XT3N frame family, configured for a current range of 200–2000 A and a rated voltage of 690 V. Its TMD trip unit combines adjustable thermal protection with a fixed magnetic release, delivering reliable interruption during overloads and short circuits. This variant is cataloged as XT3N 250 TMD 200-2000 3p FF, indicating fixed front terminals for straightforward installation. Designed for robust protection in industrial environments, it integrates with ABB's Tmax XT line to form modular protection schemes in switchgear and distribution panels.