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Smart ACB is LS ELECTRIC's next-generation ACB product. It is compact in size with better blocking performance, and provides advanced cutting-edge features such as world-class measurement functions, relay, IoT communication, diagnosis, and analysis. It provides optimal solutions for industrial fields that are shifting to digital transformation. In order to respond to different requirements from customers in various industries, Smart Trip Unit (hereinafter "STU"), which is responsible for the product performance and functions, was developed as a separate module from the main body mechanism that cuts off the power.