Its TM240 thermal-magnetic overcurrent release handles overloads and short-circuits without external power, and the integrated shunt trip (STL) allows remote tripping via a control signal — useful for emergency-off circuits or PLC-driven safety sequences. Breaking capacity reaches 187 kA at 240 V, 121 kA at 415 V, and 75.6 kA at 440 V, so it can sit upstream of smaller breakers in a high-fault panel without needing a current-limiting fuse ahead of it.
Panel fit and derating — what the numbers mean on a real bus
At 76.2 mm wide, 130 mm tall, and 70 mm deep, this MCCB fits standard SENTRON panel footprints and accepts busbar connectors from the 3VA accessory range. Above that it derates gradually: 30.72 A at 55 °C, 30.08 A at 60 °C, 29.44 A at 65 °C, and 28.8 A at 70 °C.