Its standout feature is the interrupting capacity: 220 kA at 240 V, 154 kA at 415 V, and 121 kA at 440 V — figures that handle high-fault utility feeds or transformer secondaries without cascading upstream.
Current rating across the temperature range
At 55 °C it derates to 78 A, at 60 °C to 77 A, at 65 °C to 75 A, and at 70 °C to 74 A.
The 3-pole footprint fits standard SENTRON panel-mount cutouts; the supplied basic switch (3VA11806EF320AA0) and the UVR are factory-installed. Two HQ auxiliary switches provide form-C contacts for remote status — one spare contact if you use one for the UVR monitoring circuit.
Insulation and power loss
Maximum power loss 21.7 W at rated load — heat that must be considered in sealed enclosures.