General The MC4 fuse holder is an in-line, waterproof connector designed for photovoltaic (PV) solar systems to provide overcurrent protection for solar panels and other components. It integrates a safety fuse into a standard MC4 connector format, allowing for simple “plug-and-play” installation in solar wiring. Technical data Connector System: 6mm. Rated Voltage (V): 1500V DC Rated Current (A): 30A Ambient Temperature Range: -40°C +90° C(IEC) -40°C +75° C(UL) Upper limiting Temperature: +105°C (IEC) Degree Of Protection, Mated / Unmated: IP67 / IP2X Diode/Fuse type Schottky diode/PV fuse Contact Resistance of Plug Connectors: 0.5mΩ Safety class: II Contact Material: Messing, Copper Alloy, tin plated Insulation Material: PC/PPO Locking System: Snap-in Flame Class: UL94-HB/UL94-V0 Salt mist spray test, degree of severity 5: IEC60068-2-52