1SDA051368R1 is an auxiliary contact block accessory designed for ABB Tmax T series molded case circuit breakers (T1 through T6). The unit features one changeover contact for open-closed indication and one changeover contact for tripped indication, enabling comprehensive circuit status monitoring. This accessory is compatible with the entire Tmax T product line and meets IEC standards for low-voltage circuit breaker applications. The compact design with a net weight of 0.04 kg makes it suitable for integration into control panels and monitoring systems where real-time circuit status feedback is required.