Features Comprehensive Circuit Protection: Built-in overcurrent, overheating, temperature control, and short circuit features ensure the safety of your photovoltaic power system Hassle-Free Installation: Designed for easy installation with a module format that fits standard 35mm guide rails, making replacement quick and straightforward Exceptional Performance: Featuring IP20 protection, this device offers minimal leakage current, rapid response times, and low residual voltage for reliable operation Intuitive Visual Indicator: The clear viewing window uses color coding to show the working state of the protector, providing an immediate understanding of performance status Durable Fireproof Construction: Made from high-quality PC material, this surge protector is fireproof and flame retardant, ensuring stability and reliability for safe usage Features: 1、CIRCUIT PROTECTION: DC surge protector with built in overcurrent, overheating, temperature control and short circuit protection to ensure safe . 2、EASY INSTALLATION: The surge protector is a module design, adopts 35mm standard guide rails mounting, which is easy to install and replace. 3、GOOD PERFORMANCE: With IP20 protection level, the surge protective device has small leakage current, quick response and low residual voltage. 4、VISIBLE WINDOW: The color of the viewing window indicates the working state of the protector, clear and intuitive, with gap discharge electrode. 5、PC MATERIAL: The shell of the protector is made of PC material, which is fireproof and flame retardant, stable and reliable, ensuring safe use. Specification: Item Type: DC Surge Protector Model: SGSP 40 Uc: 1000VDC In: 20KA(8/20μs) Inmax: 40KA(8/20μs) Up: ≤3.8KV Shell Material: Fireproof and high flame retardant PC Installation: 35 standard guide rail Protection Grade: IP20 Package List: 1 x Surge Protector Package List 1 x Surge Protector