The JKM1-400 is a high-performance molded case circuit breaker (MCCB) designed for reliable circuit protection in low-voltage power distribution applications. With a rated working voltage of 400V and insulation voltage of 800V, this air-type MCCB is available in 3-pole or 4-pole configurations to accommodate various system requirements. It offers exceptional breaking capacity with ICU of 65 kA and Ics of 50 kA, ensuring dependable overcurrent and short-circuit protection for feeders, motors, and branch circuits in industrial, commercial, and residential installations.

Manufactured under ISO9001-2000 quality standards and certified with CE, CB, and CCC, the JKM1-400 delivers consistent performance and operational safety. The compact molded case design provides durability and arc resistance, while the user-friendly mechanism allows easy installation and maintenance. Rated at 400A with a test voltage of 440V (400×1.1), this MCCB is shipped in individual cartons for secure transport. Ideal for applications requiring high breaking capacity and reliable fault protection, the JKM1-400 combines robust construction, international certifications, and dependable performance for low-voltage power distribution networks.

Our professional processing enterprise is dedicated to the transmission and distribution system. We specialize in the production of PT handcarts, metering handcarts, isolation handcarts, fuse handcarts, grounding handcarts, Vst circuit breakers, isolation switches, load switches, and outdoor pole mounted circuit breakers. We rely on high and low voltage indoor and outdoor circuit breakers ranging from 10KV to 35KV. Since establishment, our facility has implemented a high starting point, high quality, and high level approach.

This strategy, backed by a comprehensive quality management system, has steadily promoted our development. At present, it has become a backbone enterprise in the national switch and cabinet accessories industry, enjoying a high reputation among various sectors of society and customers. The export business involves Russia, Malaysia, Iran, and is highly trusted by users. Adhering to the business philosophy of "integrity, mutual benefit, and pursuit of excellence", we rely on diligence and wisdom to strengthen and expand our "quality" and make greater contributions to the revitalization of the power industry. Looking forward to working together with all new and old friends to create a brilliant tomorrow!