Working on a solar power system? You need a proper DC breaker. This is a GEYA solar DC circuit breaker, model GYM9-DC. It's designed for photovoltaic (PV) systems, handling DC current up to 125A. Available in 1-pole or 2-pole configurations. Rated for 201-250V DC. It mounts on a standard DIN rail, has screw terminals, and is for indoor use (IP20 protection). The trip curve is Type C. Made from ABS plastic. Color is blue. Made in China. This is a crucial safety component for your solar array - it protects your wiring from overcurrent and allows you to manually disconnect the circuit. Use it between your solar panels and charge controller. Must be installed by a qualified electrician familiar with DC systems and local codes. Not a toy - serious electrical equipment. Ensure you select the correct current rating for your setup. A reliable, affordable component for DIY or professional solar installations. Stay safe and protect your investment.