ABB T25 DU 8.5 Thermal Overload Relay

The ABB T25 DU 8.5 is a thermal overload relay designed for reliable motor protection in industrial applications. It safeguards electric motors against overload, phase failure, and prolonged starting times by monitoring current and tripping the circuit when thresholds are exceeded. This model features an adjustable current range of 6.0 to 8.5 A, making it suitable for small to medium-sized motors in applications such as pumps, fans, conveyors, and compressors. Key benefits include temperature-compensated bimetallic elements for accurate protection across varying ambient conditions, manual or automatic reset options, and compatibility with ABB A-line contactors like A9 to A26. Advantages over similar products include robust construction for harsh environments, easy integration into control panels, and compliance with international standards like IEC and UL. Drawbacks may include the need for precise calibration to avoid nuisance trips and limited suitability for very high-current applications. Overall, it offers cost-effective, dependable protection enhancing motor longevity and system safety. Based on attached images, the unit appears to be in used but functional condition with some label wear, includes original box and manual. Estimated market value is based on comparable used listings.