Product Identification and Core Ratings
Per the specification, it is rated at 25 A with a 300 mA residual current sensitivity, Type AC, for a 230 V AC supply (N left configuration). The 300 mA sensitivity makes it suitable for general protection against sinusoidal AC earth faults where a higher threshold is acceptable, such as in sub-distribution boards feeding fixed equipment rather than socket-outlet circuits. The unit carries a short-circuit current rating (SCCR) of 10 kA per IEC 61008-1, with a conditional rated short-circuit current of 0.5 kA. Operating frequency is fixed at 50 Hz, and the supply voltage range is 230/400 V AC. The minimum test voltage for the integral test circuit is 100 V.
Mechanical Integration and Environmental Limits
The housing dimensions are 70 mm depth × 36 mm width × 90 mm height, with a 60 mm grid spacing. Protection class is IP20, applicable only when the distribution board is installed with connected conductors. Supplementary devices can be installed.