The Siemens 3VA2163-6HL36-0KA0 is a 3-pole SENTRON molded case circuit breaker rated for 63 A continuous current at 40 °C ambient, with an ETU320 electronic trip unit that provides adjustable overload and short-circuit protection curves. The integrated shunt trip release (STL) allows remote tripping via a control signal, which is useful for emergency-stop circuits or supervisory shutdown sequences.
Breaking capacity across voltage — selectivity planning
The 3VA2163-6HL36-0KA0 delivers 242 kA at 240 V, 187 kA at both 415 V and 440 V, 121 kA at 500 V, and 5 kA at 690 V.
Panel dimensions and thermal derating
At 86 mm depth, 105 mm width, and 181 mm height, this MCCB fits standard panel-mount cutouts for 3-pole SENTRON frames. The 63 A rating holds steady from 40 °C through 50 °C, then derates linearly to 53.55 A at 70 °C — a 15% reduction at the upper operating limit. For enclosed panels with limited airflow, use the 55 °C or 60 °C column (60.6 A and 58.3 A respectively) for conservative sizing. Maximum power loss is 4 W, which is negligible for thermal budget calculations.
Trip unit and release configuration
The ETU320 overcurrent release is a basic electronic trip unit with fixed time-current curves — no communication, no ground-fault monitoring, and no phase-failure detection. If your application requires remote status feedback or undervoltage protection, you will need to add external relays or select a variant with those options.
Environmental range and storage
For outdoor enclosures in cold climates, the -25 °C lower operating bound is adequate for most regions; verify if sustained sub-25 °C ambient is expected.