The interrupting capacity is specified at four voltage points: 220 kA at 240 V, 154 kA at 415 V, 121 kA at 440 V, and 17 kA at 690 V. Thermal derating is documented across the operating range: the breaker holds 20 A continuously from 40 °C through 50 °C, then steps down to 19.2 A at 55 °C, 18.8 A at 60 °C, 18.4 A at 65 °C, and 18 A at 70 °C. This curve matters when the breaker is enclosed in a warm panel or mounted adjacent to other heat sources — the 70 °C rating is the one to use for worst-case ambient calculations.
Auxiliary and undervoltage release configuration
This breaker ships with an integrated undervoltage release (UVR) — design code 6EF36 indicates the UVR is factory-installed. The trip alarm switch changes state only on a fault trip, not on manual switching, which is useful for distinguishing between intentional isolation and protective interruption. The auxiliary release order code for replacement or spare parts is 3VA9608-0BB24. Physical dimensions are 130 mm height, 76.2 mm width, and 70 mm depth, which fits the standard SENTRON 3VA mounting footprint for 3-pole frames.
The part carries no communication function, no phase failure detection, and no ground fault monitoring — it is a straightforward thermal-magnetic line protection breaker with undervoltage release, suited for fixed-trip applications where adjustable electronic trip units are not required.