305 40 amp dc mcb products are offered for sale by suppliers on Alibaba.com, of which miniature circuit breakers accounts for 82%, circuit breakers accounts for 10%, and moulded case circuit breakers accounts for 1%.
A wide variety of 40 amp dc mcb options are available to you, such as c, b and d.You can also choose from home, protective 40 amp dc mcb,as well as from li, lsi, and lsig 40 amp dc mcb,and whether 40 amp dc mcb is white, or black.