Feature: 1. PA66 MATERIAL: Made of premium Pa66 material, this solar combiner box is strong and sturdy, impact resistant and wear resistant, safe and reliable for long term use. 2. EASY TO USE: IP65 waterproof and easy to install, and the transparent cover plate of the combiner box is also convenient for checking the status of the circuit breaker. 3. APPLICABLE CABLE: Compatible with 5 to 10mm diameter cable, and 10‑4 AWG cable, with a large space for wiring. 4. APPLICABLE SCENARIOS: This combiner box is suitable for photovoltaic solar panel grid connected systems and solar off grid systems, solar power generation systems, etc. 5. IDEAL REPLACEMENT: Wonderful replacement for the old and damaged parts, fine workmanship, attention to details, helps you improve the working efficiency! Specification: Item Type: PV Combiner Box Material: Pa66 Waterproof Grade: IP65 Circuit Breaker Information: Rated Current: 40A Rated Voltage: DC1000V Rated Limit Breaking Current Icu: 4KA Surge Protector Information: Rated Current In: 20KA Maximum Current Imax: 40KA Maximum Continuous Working Voltage Uc: DC1000V Voltage Protection Level Up: Less than or equal to 3200V . Package List: 1 x Solar Combiner Box (2 Parts)1 x Electric Tape4 x Screw 4 x Wall Plug (Random Color)4 x Connecting Terminal