Breaking capacity is 440 kA at 240 V, 330 kA at 415 V and 440 V, 220 kA at 500 V, and 52.5 kA at 690 V. These figures place it in the high-interrupting category — suitable for installation close to the transformer secondary where fault currents are highest.
Thermal management and panel fit
At 400 A load the maximum power loss is 96 W. Front IP40 protection means it is suited for enclosed switchboards — not for washdown environments. Dimensions are 248 mm height, 138 mm width, 110 mm depth, which fits standard SENTRON 3VA mounting patterns for retrofit into existing Siemens MCCB panels.