Advantages and Features:
1. Current protection: short-circuit instantaneous long-time delay protection, overcurrent and overload protection;
2. Voltage protection: loss of voltage protection, overvoltage and undervoltage protection, automatic closing when voltage is detected;
3. Isolation protection: the 4-pole switch completely isolates the photovoltaic power station and the power grid;
4. Leakage protection: the leakage setting value is adjustable (optional);
5. Lightning protection: efficient anti-surge module;
6. Anti-islanding protection: microcomputer control (optional).