Waterproof 20A In-Line Fuse Connector from Newpowa. Designed to embed a 20A fuse in a waterproof fuse holder to prevent large currents from damaging the Solar Panels. For direct connection to other Newpowa modules with connectors attached. $11.99 with Free Shipping for Domestic Orders (48 States). We offer a 1yr material and parts workmanship warranty.