What this MCCB delivers
The Siemens 3VA2163-7MN36-0BH0 is a SENTRON molded case circuit breaker (MCCB) configured for motor protection. Its 63 A rated continuous current holds at ambient temperatures up to 50 °C without derating; above that the curve steps down to 60.48 A at 55 °C and 56.7 A at 70 °C, per the datasheet. The 330 kA breaking capacity at 240 V and 242 kA at 415 V mean this breaker clears high-fault scenarios on motor branch circuits without upstream coordination issues — it's sized for high-available-fault panels. The ETU350M electronic trip unit provides adjustable overload and short-circuit protection curves, plus phase failure detection. An undervoltage release (UVR) is integrated, and the auxiliary contact package includes two auxiliary switches plus one trip alarm switch (HQ). The 3-pole design fits standard MCCB mounting footprints in distribution panels.
Panel integration and mounting
The 3VA2163-7MN36-0BH0 measures 86 mm deep by 105 mm wide by 181 mm tall. It mounts into the standard MCCB cutout or on a mounting plate within an enclosure. The 105 mm width occupies one standard MCCB pole space per pole. Maximum power loss is 75 W, so ventilation or derating within sealed enclosures should be checked against the thermal curve above 50 °C.