The A4BQ time delay class 'L' centre bolted tags-4hole fixing BS fuse links (in sizes A1 to A4) are specifically designed for general industrial applications. They provide good peak and let-through current limitation, ensuring maximum protection for downstream circuit components against short circuit let-thru current. The built-in 4-second time-delay characteristic at 500% of rated current helps prevent replacement errors. With a breaking capacity of 200 kA/AC and 100 kA/DC, these fuse links offer reliable protection. They are UL listed to standard 248-10 and CSA certified to standard C22.2 No.248.10. Rated current and voltages are 1000A, 600VAC/500VDC. These fuse links have a wide variety of applications including mains, feeders, large motors, lighting, heating & general loads, UPS DC links, battery disconnects, and other DC applications.