Feature: 1. BOX STRUCTURE: PV DC combiner box with DC fuse, DC surge protection device, DC circuit breaker or DC load disconnector, with high reliability. 2. IP65 PROTECTION: The DC combiner box has IP65 protection, waterproof and dustproof, UV resistant, with strict high and low temperature test. 3. PVC PLASTIC SHELL: The box is made of PVC engineering plastic, which is flame retardant, impact and UV resistant, ensuring safe operation. 4. INPUT AND OUTPUT: With 4 input channels, 1 output channel, single MPPT inverter, used for monocrystalline silicon, polycrystalline silicon or thin film solar modules. 5. SIMPLE WIRING: The rated current of PV fuse, circuit breaker and load disconnect switch, simplified system wiring, which is safe and reliable. Specification: Item Type: PV Combiner Box System Maximum DC Voltage: 550V Maximum Input Current Each String: 15A Maximum Input Strings: 4 Strings Maximum Output Switch Current: 50A/63A Inverter MPPT Number: 1 Output String Number: 1 String Arrester Protection: Test Category: II Class Protection Rated Discharge Current: 20kA Maximum Discharge Current: 40kA Voltage Protection Level: 2.8kV Maximum Continuous Working Voltage Uc: 600V Pole Number: 2P Structural Features: Plug in module Protection Grade: IP65 Output Switch: DC disconnector (standard), DC circuit breaker (optional) MC4R Waterproof Connector: Standard configuration PV DC Fuse: Standard PV Surge Protector: Standard Monitoring Module: Optional Protection Diode: Optional Box Material: PVC Installation Method: Wall Mounting Operating Temperature: -25℃-55℃ Temperature Rise: 2km Allowable Relative Humidity: 0-95%, no condensate . Package List: 1 x PV Combiner Box Note: Pay attention to the safety of electricity when using, and operate under professional guidance.