The LRD1508 is a thermal overload relay designed for protecting three-phase motors with power ratings of approximately 1.1 to 1.5 kW at 400V. It features a thermal setting range of 2.5 to 4A and a tripping class of 20, ensuring reliable overload protection. The relay is equipped with an ambient compensated, bi-metallic/differential trip mechanism that provides single-phase sensitivity. It is directly mountable on contactors and includes functions such as short-circuit protection, making it suitable for safeguarding motor circuits in various industrial applications.

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