Interrupting capacity reaches 52.5 kA at 240 V, 32 kA at 415 V, and 7.5 kA at 690 V — figures that govern the available fault current the breaker can clear without upstream coordination issues.
Thermal derating and enclosure fit
At 55 °C it derates to 19.2 A, and at 70 °C it reaches 18 A — a 10% drop from the nameplate. The 70 mm depth and 76.2 mm width match the standard SENTRON 3VA footprint, so it occupies the same DIN-rail or mounting-plate slot as other 3VA frames. Front IP40 protection means it is suited for enclosed panel mounting, not open washdown zones.
Auxiliary and shunt-trip integration
This variant ships with two HQ auxiliary switches and a shunt trip (STL) release. The integrated auxiliary trip order code is 3VA9688-0BL33. The shunt trip allows remote tripping via a control voltage — useful for emergency-stop circuits or supervisory shutdown.