SENTRON 3VA1150-3GF42-0AA0 — 50 A 4-Pole MCCB, TM240 Release
The interrupting rating hits 75.6 kA at 240 V AC and 52.5 kA at 415 V AC — enough for high-fault panelboard or distribution applications where a standard MCB would not hold. The 100% N-conductor protection design means the neutral pole is fully rated, not switched or reduced — important for four-wire systems where the neutral carries load current.
Interrupting Capacity and Thermal Derating
At 415 V it still breaks 52.5 kA; at 440 V it drops to 32 kA; at 500 V and 690 V it holds at 11.9 kA. Thermal rating holds a flat 50 A from 40 °C through 50 °C, then begins a gentle roll-off: 49 A at 55 °C, 48 A at 60 °C, 46 A at 65 °C, and 45 A at 70 °C.