160 A MCCB with 242 kA interrupting rating — line protection for high-fault panels
That simplifies panel thermal calculations: if the enclosure ambient stays under 70 °C, the breaker holds its full 160 A.
Breaking capacity across voltages — selectivity planning
At 415 V and 440 V the breaker still delivers 187 kA, dropping to 121 kA at 500 V. At 690 V the rating falls to 3.7 kA — that's the limit for 690 V line-side faults. For coordination studies, the 242 kA at 240 V is the headline number, but the 187 kA at 415 V is what governs most European 400 V distribution panels.