It carries the ETU350M electronic overcurrent release with phase failure detection, so it catches the unbalance that kills windings before the thermal overload in a starter can respond.
At 55 °C it steps down to 96 A, at 65 °C to 92 A, and at the maximum 70 °C operating ambient to 90 A. Interrupting capacity drops as voltage rises: 330 kA at 240 V, 242 kA at 415 V and 440 V, 187 kA at 500 V, and 52.5 kA at 690 V. That 52.5 kA at 690 V is still well above the typical 50 kA SCCR requirement for most 690 V industrial networks.
Built-in undervoltage release and trip unit
The overcurrent release is the ETU350M, a microprocessor-based unit that provides adjustable thermal and magnetic trip curves plus phase failure detection. There is no auxiliary contact block, no communication module, and no voltage-trip release on this variant; those are add-on options if needed later.
Maximum power loss is 75 W — account for that heat in a sealed enclosure when sizing ventilation.