Frame circuit breakers (also known as universal circuit breakers) are core protection and control devices in low-voltage power distribution systems. They are suitable for high-current circuits ranging from 630A to 6300A and are primarily used for high-power loads such as distribution mains and large motors. They offer multiple protection features, including overload, short-circuit, and undervoltage, and boast strong breaking capacity. They support both manual and electric operation, and some are network-enabled for intelligent monitoring. They are widely used in factory distribution rooms, data centers, and high-rise building power distribution systems, ensuring the safe and stable operation of high-current circuits.