This is the motor protection variant, meaning the trip curve is shaped for motor starting inrush — not a straight thermal-magnetic for distribution. The shunt trip release (STL) is factory-fitted, allowing remote or emergency-stop opening via a control voltage. Two auxiliary switches HQ provide status feedback to the PLC or HMI — one for the main contacts, one for the trip signal.
This MCCB carries 187 kA at 240 V, dropping to 121 kA at 415 V and 440 V, then 75.6 kA at 500 V, and 17 kA at 690 V. The 690 V figure (17 kA) is the ceiling for 600 V class systems; verify coordination if the fault current exceeds that at the point of installation.
Temperature derating and power loss
Above that, derate linearly: 192 A at 55 °C, 188 A at 60 °C, 184 A at 65 °C, 180 A at 70 °C (–). The maximum power loss is 75 W — enough that adjacent devices in a sealed enclosure need airflow.