The ETU550 electronic trip unit provides adjustable protection curves, and the breaker includes a communication function for integration with monitoring systems — useful for a plant-floor electrician who wants to see trip events logged without walking the panel.
Above that it derates: 375 A at 55 °C, 350 A at 60 °C, 325 A at 65 °C, and 300 A at 70 °C.
Dimensions: 248 mm high, 184 mm wide, 110 mm deep. The 184 mm width for a 4-pole frame is standard for this class — it will drop into a panel cutout designed for a SENTRON 3VA2 4-pole without rework.