Features This is a good circuit breaker with an electrical life of at least 8,000 times and a mechanical life of at least 20,000 times. Used to protect circuits from damage caused by overcurrent caused by overload or short circuit. Miniature circuit breakers can be closed quickly to ensure reliable load operation. Extends the life of electrical circuit breakers. Easy to install. Professional design, reasonable structure, easy to replace and use. The air circuit breakers are made of high quality materials and are sturdy and durable. Use can improve work efficiency, convenient and reliable use, support short circuit protection, overload protection. Miniature circuit breakers can be easily mounted on DIN rails, which are not included. With high anti-aging and corrosion resistance, powerful functions ensure high efficiency. Bipolar circuit breakers are tested several times before leaving the factory to provide corrosion protection and ensure high quality. Widely used in solar panels, wind-solar hybrid systems and many other DC systems. Package List