The interrupting rating drops as system voltage rises: 330 kA at 240 V, 242 kA at 415 V and 440 V, 187 kA at 500 V, and 3.7 kA at 690 V. That steep drop at 690 V means this breaker is not suited for 690 V distribution — the 3.7 kA rating is below typical fault currents in industrial 690 V networks. For 400 V class panels, the 242 kA figure covers most utility-transformer fault levels.
Thermal performance and derating
That simplifies panel design in warm enclosures or near heat sources. Maximum power loss is 28 W, which is moderate for a 160 A frame; factor that into enclosure ventilation calculations.
Dimensions are 181 mm height, 140 mm width, 86 mm depth. The breaker ships with the undervoltage release and auxiliary switches pre-installed; no field assembly of those options required.