MCCB for line protection with high interrupting capacity
Its interrupting capacity reaches 187 kA at 240 V, 121 kA at 415 V, and 75.6 kA at 440 V — enough to handle high-fault-current scenarios like large transformer secondaries or industrial feeder circuits without cascading upstream breakers. That UVR is a panel-builder detail: it drops the breaker on loss of control voltage, so verify your control-circuit coordination before energizing.
Rated current holds at 160 A from 40 °C through 50 °C, then derates to 158 A at 55 °C, 155 A at 60 °C, 153 A at 65 °C, and 150 A at 70 °C. The storage limits govern handling and shipping, not running conditions.