That flat thermal curve is the headline spec for anyone sizing this into a warm panel: it holds 160 A at 70 °C, which means the breaker isn't the weak link when the enclosure runs hot. Three-pole construction, 181 mm tall, 105 mm wide, 86 mm deep — it fits the standard SENTRON 3VA mounting footprint, so a panel laid out for a 3VA2116 frame will accept this without re-drilling.
Short-circuit breaking capacity hits 330 kA at 240 V, 242 kA at 415 V and 440 V, 187 kA at 500 V, and 4.5 kA at 690 V. At typical 400 V industrial supply, 242 kA gives substantial headroom for high-fault installations — you can coordinate downstream without worrying about the main breaker opening on a branch fault.
Motor protection features
Built-in phase failure detection trips the breaker if one phase drops out — a common cause of single-phasing motor burnout. The undervoltage release (UVR) provides a separate trip path for undervoltage conditions, which is useful for sequenced restart schemes or safety circuits that need to drop the motor on a sag. That gives four separate signal outputs for status monitoring, fault annunciation, or PLC inputs without needing external contactors.