The 63 A rating holds flat from 40 °C to 50 °C, then derates to 56.7 A at 70 °C, so ambient temperature inside the enclosure matters for continuous loading.
The interrupting rating 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's typical for an MCCB — the arc energy scales with voltage.
Trip unit and auxiliary configuration
The ETU350M trip unit handles overcurrent protection with phase failure detection built in. A shunt trip (STL) release is integrated — part number 3VA9688-0BL30 for the auxiliary trip assembly. The basic switch assembly is order code 3VA2163-7MN32-0AA0.