Interrupting ratings and thermal derating
This MCCB's short-circuit current rating (SCCR) drops as line voltage rises: 187 kA at 240 V, 121 kA at 415 V, 75.6 kA at 440 V, 30 kA at 500 V, and 17 kA at 690 V. Thermal derating is flat to 200 A up through 50 °C; above that it steps down to 194 A at 55 °C, 188 A at 60 °C, 182 A at 65 °C, and 176 A at 70 °C.
Auxiliary wiring and internal accessories
That means you get remote tripping capability and two sets of dry contacts for status feedback plus one dedicated alarm contact that changes state only when the breaker trips on fault — useful for a PLC input that logs the event separately from a manual open.
