Above 50 °C, the thermal curve steps down: 375 A at 55 °C, 350 A at 60 °C, 325 A at 65 °C, and 300 A at 70 °C. That derating profile matters if this breaker sits near other heat sources in a crowded enclosure. At 240 V it interrupts 187 kA; at 415 V and 440 V it holds 121 kA; at 500 V it drops to 75.6 kA; at 690 V it's 7.5 kA. The 7.5 kA at 690 V is still adequate for most 690 V industrial distribution but confirms this breaker is sized for low-voltage main or feeder duty, not 690 V sub-distribution. No undervoltage release or voltage trigger is fitted; ground-fault monitoring is not built in.
The 110 mm depth leaves room behind the gland plate for cable bends. The storage minimum matters for unheated warehouses in cold climates — the breaker can sit at -40 °C without damage.