The Siemens 3VA2163-7MN32-0HH0 is a 3-pole SENTRON molded case circuit breaker (MCCB) rated for 63 A continuous current, with a motor protection version designation and an ETU350M electronic overcurrent release. The 330 kA breaking capacity at 240 V tells you it can handle high-fault-current scenarios without cascading upstream — that's the figure that governs selectivity coordination in a distribution panel. The 63 A rating holds flat from 40 °C to 50 °C, then derates to 56.7 A at 70 °C, so ambient temperature inside the enclosure matters for continuous loading.
Breaking capacity across voltages
The interrupting rating drops as voltage rises: 330 kA at 240 V, 242 kA at 415 V and 440 V, 187 kA at 500 V, and 52.5 kA at 690 V. That's typical for an MCCB — the arc energy scales with voltage. If your system runs at 690 V, the 52.5 kA figure is the one to use for SCCR compliance; don't spec off the 240 V number.
Trip unit and auxiliary configuration
The ETU350M trip unit handles overcurrent protection with phase failure detection built in. The auxiliary contact block ships as 2 auxiliary switches plus 1 trip alarm switch (HQ variant). A shunt trip (STL) release is integrated — part number 3VA9688-0BL30 for the auxiliary trip assembly. No undervoltage release, no ground fault monitoring, no communication function on this variant. The basic switch assembly is order code 3VA2163-7MN32-0AA0.
Physical fit and environmental limits
Dimensions are 181 mm high, 105 mm wide, 86 mm deep — standard MCCB footprint for a 3-pole frame at this rating. Operating temperature range is -25 °C to 70 °C; storage range is -40 °C to 80 °C. Maximum power loss is 75 W, so factor that into enclosure thermal calculations if the panel is densely packed. Latching endurance is rated at 20,000 operations.