The 300 mA Type AC residual current trip detects sinusoidal AC earth faults only; it is not suitable for pulsating DC or smooth DC fault currents (those need Type A or F). The EN 60898 figure governs residential and commercial distribution board coordination; the higher IEC 60947-2 rating applies when the device is used in industrial installations where prospective fault current may be higher. The 1P+N design switches the line conductor only; the neutral is switched but not protected against overcurrent. This is standard for single-phase final circuits where neutral protection is not required by local code.
This RCBO is designed for DIN-rail distribution boards in residential, commercial, and light industrial installations. It provides combined overcurrent and earth fault protection in a single 2-module package, saving space compared to separate MCB + RCCD.