Description This product is a 10A/15A/20A/30A fuse embedded into a waterproof fuse holder. It features an solar connector lead on each end, making it compatible for use with an Adaptor Kit and solar panel leads. This Fuse Holder is designed to provide complete single circuit protection to your solar power array. The fuses prevent large currents from damaging the solar panels. Purchase this product for extra protection on your system. If you have any questions regarding this product, please call us at 1 (909) 287-7111 or email support@renogy.com . Key Features Ease of Use Compatible with PV cables with different insulation diameters. Designed for a wide range of DC applications. Simple plug-and-play. Auto-lock equipment of male and female points render connections easy and reliable. Safe Waterproof - IP67 Class Protection. Insulation material PPO. High current-carrying capacity Protection Class II Connector adopts touch and insertion of reed with inner-knob type Package Includes Solar Connector Waterproof In-Line Fuse Holder w/ Fuse 1 x