Type 1 + 2 protectors against transient overvoltages should be tested with 10/350 µs lightning impulse wave and 8/20 µs wave, combining the capacity to absorb lightning current with low residual voltage.
This SPD is plugged directly in the same socket as the load to be protected. It contains effective protection against transient overvoltages for single-phase power supply lines. Tight protection according to the cascade protection recommended in the Spanish Low Voltage Regulations (REBT ITC23).