Feature:   1. Multi Function: The photovoltaic combiner box is applicable to your photovoltaic grid connected or off grid solar power generation system. This makes your solar panel system work reliably and safely.     2. 63A Circuit Breaker: Comes with a 63A circuit breaker, a surge protection device, it can provide short circuit protection and control the output of combiner box.     3. 15A Fuse: Built in 8 separate 15A fuses. The maximum current of a single photovoltaic input array is 15A. Their function is overload protection.     4. Easy Wiring: The internal wiring is safe, simple, easy to use and install, and the lock catch can defend your equipment.     5. Scope of Application: This combiner box is the perfect equipment for outdoor installation and use, which is suitable for RV solar system, 12V, 24V, 36V, 48VDC photovoltaic solar energy, etc.             Specification:                       Item Type: PV Combiner Box  Material: Polycarbonate, ABS  Input: 4 Strings  Output: 1 String  Maximum Voltage: 500V  Maximum Short Circuit Current (isc) of Each Input: 15A (replaceable)  Maximum Current Input: 63A  Protection Grade: IP65  Impact Resistance: IK10  Product Size: About Approx. 300 x 260 x 140mm / 11.81 x 10.24 x 5.51in (excluding protruding parts)  Cable Inlet: PG09 2.5 to 6mm², 2.5 to 6mm²  Output Current Ring: PG21 2.5 to 6mm², 2.5 to 6mm²  DC Disconnector: LQL7 PV 63A  Rated Insulation Voltage (Ui): 500V  Rated Current (Le): 63A  DC Arrester: LD 40  Maximum Working Voltage (Ucpv): 500V  Maximum Discharge Current: 40KA  DC Fuse Holder: LQPV 1000VDC  Rated Working Voltage: 500V  Fuse: Approx. 10 x 38mm / 0.39 x 1.5in 15A                               Package List:       1 x PV Combiner Box       1 x Manual        1 x Ground Wire       1 x Wrench        4 x Screw       4 x Expansion Tube        4 x Connector( Male x 2, Female x 2)       4 x Core