Modular DIN Rail Products offer a wide range of different functions which can be integrated in the operations of an installation, with significant benefits to the user.
Product Overview
Miniature circuit breakers (MCBs) are used throughout the world in all types of electrical installations. ABB MCBs are approved for use by Underwriters Laboratories in systems rated up to 600VAC/VDC. Devices are also certified per CSA. MCBs are approved per IEC-898 and VDE 0641, and certified under IEC-947 and VDE 0660 standards for use in systems rated up to 690VAC. MCBs can be applied to 16 2/3Hz – 400Hz and DC power systems. Special direct current version MCBs include a permanent magnet for DC fault current interruption. These "UC" versions are rated 250/500VDC under UL1077/CSA C22.2 No. 235. Continuous current ratings are as low as 0.2 amperes and up to 125 amperes maximum. MCBs are of compact size and can be quickly mounted on standard 35mm DIN rail or can be front mounted by use of a front mounting kit. MCBs include line and load side terminals for conductors from 18 through 4AWG (0.75 – 25mm2) for 63 amperes. MCBs can also be connected via busbar conductors which can be either upper or lower mounted for top feed or bottom feed. Dual function terminals allow busbars to be connected with main incoming line conductors without separate lugs.