Protection settings and auxiliary contacts
The 3VA1450-6EF32-0AC0: The TM240 line protection with ATAM provides adjustable overload protection: Ir is settable from 350 A to 500 A, matching the feeder's continuous load without a separate thermal relay. Short-circuit protection Ii is adjustable from 5 to 10 times In (2,500–5,000 A), allowing coordination with downstream breakers or motor starters. Two auxiliary switch changeover contacts are integrated, giving status feedback for remote monitoring or PLC inputs without an external auxiliary block.
Panel fit and DIN-rail integration
The nut keeper kit (included) secures the breaker in high-vibration panels, common in pump or conveyor MCCs.