Feature: 1. Secure for Work: PV array input, primary combination, fast circuit cut off, lightning protection, anti reverse protection, overload protection, etc. 2. Good Protection: Built in 4pcs 15A fuses for overload protection, protecting photovoltaic solar panels and inverters. In addition, it will reduce the cable length from the panel to the inverter, and optimize the system command to make the system more useful. to make a long story short. It will also increase the output power of photovoltaic power generation system. 3. Circuit Breaker: 63A circuit breaker. It can provide short circuit fault protection and control the output of combiner box. Green means normal. Once it turns to red, remember to replace it in time. 4. Practical Using: Combiner box is the perfect equipment for outdoor installation and use. It is suitable for photovoltaic array, solar panel, RV solar system, 12V, 24V, 36V, 48VDC photovoltaic solar energy of photovoltaic grid connected or off grid solar power generation system. 5. Great Materials: Made of IP65 waterproof and flame retardant material, which is durable. Stainless steel installation buckle, waterproof and rustproof, internal wiring, safe, simple, easy to use and install, the buckle can protecting your equipment. Specification: Item Type: PV Combiner Box Model: LQX F4 1 Material: Polycarbonate, ABS, stainless steel. Input: 4 Strings Output: 1 String Every Input Maximum Short Circuit Current Isc: 15A, replaceable. Maximum Current Input: 63A Protection Grade: IP66 Impact Resistance: IK10 Product Size: Approx. 290 x 190 x 140mm / 11.42 x 7.48 x 5.51in, excluding protruding parts. Cable Inlet: PG 2.5-6mm², 2.5-6mm² Output Current Sealing Ring: PG 2.5-6mm², 2.5-6mm² DC Disconnector: LQL7/LQB1 Rated Current Le: 63A DC Arrester: LD-40 Maximum Discharge Current: 40KA DC Fuse Holder: LQPV-32 Fuse: Approx. 10 x 38mm / 0.39 x 1.5in, 15A. . Package List: 1 x PV Combiner Box1 x User Manual4 x Installation Bracket4 x Installation Screw4 x Plastic Expansion4 x Fixing Screws2 x PV Connector1 x Wrench1 x Grounding Wire