JUW1 Fixed Type Air Circuit Breaker (ACB) is used in low voltage power distribution systems for the protection and control of main circuits.It is suitable for applications requiring high current ratings, stable performance, and reliable protection in industrial and commercial power systems.The circuit breaker is designed for AC systems with rated operating voltage up to 690V, frequency of 50/60Hz, and rated current ranging from 630A to 6300A. It provides comprehensive protection functions, including overload protection, short-circuit protection, and earth fault protection, ensuring system safety and operational reliability. With a fixed mounting structure, the JUW1 ACB is permanently installed inside the switchboard, making it suitable for installations where frequent withdrawal is not required. Its robust mechanical design and stable electrical performance support continuous operation under demanding conditions.The JUW1 Fixed Type ACB is widely applied in power distribution cabinets,industrial plants, commercial buildings,infrastructure projects, and other low voltage distribution systems. It can be equipped with protection and control units to meet different application requirements.The product is designed and manufactured in accordance with international standards, including IEC 60947-1 and IEC 60947-2, ensuring compliance with low voltage electrical regulations and reliable long-term performance.