The adjustable thermal-magnetic trip range is 38 A minimum to 300 A maximum — that's the short-circuit and overload pickup window, not the continuous rating. Interrupting capacity drops with system voltage: 440 kA at 240 V, 330 kA at 415 V and 440 V, 220 kA at 500 V, and 52.5 kA at 690 V (–). Ground-fault monitoring is built in via summation current formation on L + N conductor — that's a residual-current detection method that sums phase and neutral currents; if they don't cancel, it trips. No undervoltage release and no communication function, so this is a straight thermal-magnetic breaker with ground-fault, not a smart or remote-trip unit.
Dimensions are 140 mm wide, 181 mm high, 86 mm deep — standard MCCB footprint for a 4-pole 25 A frame.