The MLM1 Molded Case Circuit Breaker, a cutting-edge solution designed to meet the rigorous demands of modern electrical systems.

Designed for 50Hz or 60Hz AC circuits, this circuit breaker has a rated insulation voltage of 800V (500V for the MLM1-63 model) and a rated operating voltage of 690V (400V and below for the MLM1-63 model). With a rated operating current of up to 1250A, the MLM1 is ideal for low-frequency switching and starting of motors, especially those rated at 630A and below. Its robust design integrates critical protection functions such as overload, short-circuit, and undervoltage protection, ensuring the safety and longevity of your power lines and electrical equipment.

MLM1 circuit breakers are classified into three types based on their rated ultimate short-circuit breaking capacity: L-type (standard), M-type (high breaking capacity), and H-type (ultra-high breaking capacity). This classification allows users to select the most suitable model according to their specific application requirements. Notably, MLM1 circuit breakers feature a compact structure, high breaking capacity, short arc duration, and excellent vibration resistance, making them ideal for both terrestrial and marine environments. MLM1 circuit breakers offer diverse installation options, supporting both vertical and horizontal mounting, thus adapting to various space constraints and configurations, further enhancing their versatility.

The MLM1 circuit breaker is designed to operate under a wide range of normal conditions, withstanding ambient temperatures from -5°C to +40°C (common products can withstand up to +45°C), and a 24-hour average temperature not exceeding +35°C (common products can withstand up to +40°C). It is suitable for installation environments at altitudes not exceeding 2000 meters and can operate effectively in environments with +40°C and relative humidity up to 50%, while allowing for higher humidity at lower temperatures. This circuit breaker can withstand Level 3 pollution and is resistant to the effects of humid air, salt spray, oil mist, mold, and even nuclear radiation. Furthermore, it is meticulously designed for reliable operation under 4g seismic conditions, with a maximum tilt angle of ±22.5°.

In summary, the MLM1 molded case circuit breaker is an advanced electrical protection device that combines safety, reliability, and versatility. It complies with international standards, including IEC 60947-2 and GB 14048.2, ensuring compliance with global safety regulations. The MLM1 is ideal for users seeking reliable circuit breakers that can withstand harsh environmental conditions and provide superior protection for electrical systems. Whether used in industrial, commercial, or marine applications, the MLM1 circuit breaker embodies sophisticated engineering and innovative design, making it an indispensable component of any electrical installation.