Its interrupting capacity climbs to 187 kA at 240 V AC and still holds 121 kA at 415 V and 440 V — enough for high-fault industrial service entrances or large panel feeders. At 690 V it derates to 4.5 kA, so this is not a 690 V main breaker; it's a 480 V class device with headroom. Line protection design with communication function and a built-in auxiliary switch plus trip alarm switch (HP type) means the breaker reports its state to a PLC or BMS without an add-on module. Rated for operation from -25 °C to 70 °C, storage from -40 °C to 80 °C, with a maximum power loss of 48 W.
Thermal derating and real-world loading
At 55 °C it derates to 238 A, at 60 °C to 225 A, and at 70 °C to 200 A.