The interrupting capacity tells you where this breaker can safely clear a fault: 187 kA at 240 V, 121 kA at 415 V and 440 V, 75.6 kA at 500 V, and 9 kA at 690 V.
Protection and auxiliary features
The UVR drops the breaker if supply voltage falls below a set threshold, which protects the motor from single-phasing or brownout conditions. The trip indicator is not fitted on this variant, so you won't get a local mechanical flag showing a trip event — plan on reading the auxiliary switch state or using a remote indication circuit. No communication function is built in, so this is a standalone breaker, not a metering or networked unit.
Maximum power loss is 66 W. That's the heat it dumps into the enclosure at full rated current — account for it in the thermal design of the panel, especially if other heat sources are nearby.