The Siemens SENTRON 3VA2163-7MN32-0HC0 is a 3-pole molded case circuit breaker (MCCB) rated for a continuous current of 63 A across the full ambient range from 40 °C to 70 °C — no derating needed up to that ceiling.
This MCCB delivers 330 kA interrupting capacity at 240 V AC, 242 kA at 415 V and 440 V, 187 kA at 500 V, and 3.7 kA at 690 V. At the common 415 V distribution level, 242 kA gives generous headroom for most industrial secondary substations — selectivity with upstream fuses or a larger-frame MCCB is straightforward.
Motor protection features and auxiliary hardware
The design includes a shunt trip release (STL) that can be energized from a safety relay or E-stop circuit; it is a separate voltage-triggered coil, so verify the control voltage matches your panel supply. Two HQ auxiliary switches are factory-fitted, giving you one N/O and one N/C contact for status indication. The basic switch assembly is orderable separately as 3VA2163-7MN32-0AA0 if you ever need a replacement core.
The breaker occupies 105 mm width, 181 mm height, and 86 mm depth — a standard compact MCCB footprint for 63 A three-pole units. It mounts via screw terminals to a backplate or DIN rail adapter (not included).