Feature: 1. Multifunctional: This PV combiner box has PV array input, first level combination, quick cut circuit, thunder protection, anti reverse connection, overload, etc. 2. Overload Protection: The box has 8 individual 15A rated fuses built in. The maximum current for a single PV input array is 15 A. The function is overload protection. The box defends PV solar panels and inverters. 3. Increase Output Power: The PV combiner box will reduce the length of cables connected from the panel to the inverter, optimizing system instructions to make the system more useful and maintainable. Will enable the PV power system to increase the output power. 4. Control Output: 125A circuit breaker can provide short circuit fault protection and control the output of the combiner box. Surge protection device provides protection. Green indicates normal, once it turns red, remember to replace it promptly. 5. Cold Rolled Steel: Our PV combiner box is suitable for grid connected or off grid solar systems, safe and reliable. Cold rolled steel metal box with IP65 waterproof rating. durable metal box makes it more suitable for outdoor RV use and home solar panel installation. Specification: Item Type: PV Combiner Box Model: LT PV04 Material: Cold Rolled Steel Working Voltage Range (V): 100-1000V Maximum Input DC Voltage (V): 1000V Maximum Output DC Current (A): 125A Maximum Input Current Of Branch Circuit (A): 15A Number Of Input Branches: 4 Crossing Sectional Area Of Each Wire: 4 Input And Output Port Insulation Resistance To Ground: Insulation Resistance ?? 20M?? Communication Interface: RS485 Installation Mode: Indoor And Outdoor, Wall Mounted Protection Level: IP65 Ambient Temperature: -25??-55?? Relative Humidity: 0 To 95% Maximum Altitude: 3500m Level Surge Protector: In: 20kA, Imax: 40kA, UP: ?? 3.2kV SPD Indicator Status: Green Normal, Red Trigger Circuit Breaker Parameters: DC1000V, 125A Fuse Parameters: DC1000V,15A, Fuse Size: Approx. 10 x 38mm / 0.39 x 1.5in Fuse Holder Parameters: DC1000V, 32A Box Size (Excluding The Protruding Part): Approx. 450 x 450 x 182mm / 17.72 x 17.72 x 7.17in(L x W x H) Cooling Mode: Natural Cooling Surge Thunder Protection: Yes. Package List: 1 x PV Combiner Box(Shipping With 2 Keys)