The SIEMENS 3RV1021-4AA10 is a motor protection circuit breaker designed for reliable overcurrent and short-circuit protection in industrial applications. It supports motors with a maximum power of 7.5 kW and operates at voltages from 220 to 690 V AC. The breaker features a DIN rail mounting design and screw terminal electrical connections, with an adjustable overcurrent trip range of 11–16 A and a short-circuit trip rating of 208 A. Compact and durable, it weighs 364.7 g, making it suitable for control panel integration. In North America, Europe, Asia, and worldwide installations, the 3RV1021-4AA10 may possibly be ideal for systems requiring precise, robust, and high-performance motor protection solutions.