Marine Surplus offers a continually changing inventory of new Blue Sea Systems Original Equipment Manufacturer (OEM) marine electrical parts and factory components, including battery switches, electrical panels, circuit breakers, fuse blocks, power distribution components, and other hard-to-find replacement parts. Known for quality marine electrical products and innovative designs, Blue Sea Systems is trusted by boat builders and boaters worldwide. We sell only new surplus OEM parts—not used or salvaged items. If you don't see the Blue Sea Systems part you need, contact us.