The Siemens 3VA2163-5KP32-0BL0 is a SENTRON molded case circuit breaker (MCCB) rated for line protection. It carries a continuous current of 63 A across the full ambient temperature range from 40 °C to 70 °C, so no derating is needed for warm panel environments. The 3-pole design handles three-phase circuits, and the interrupting ratings are substantial: 187 kA at 240 V, 121 kA at 415 V and 440 V, 75.6 kA at 500 V, and 3.7 kA at 690 V. This gives you high fault-current headroom for most industrial distribution panels.
Key features for panel integration
The breaker includes an undervoltage release (UVR) and a full auxiliary switch complement: 2 auxiliary switches, 1 trip alarm switch, and 1 electrical alarm switch (HQ design). A trip indicator is present, and the unit supports communication and other measurement functions, making it suitable for monitored distribution panels. Dimensions are 105 mm wide, 181 mm high, and 86 mm deep — fits standard MCCB panel cutouts.
What the ratings mean for your BOM
The 63 A continuous rating is the same at 40 °C through 70 °C — no thermal derating curve to worry about in a warm enclosure. The minimum rated current is 95 A, and the maximum is 756 A, which defines the adjustment range of the electronic trip unit. The 187 kA at 240 V is the highest short-circuit capacity; at 690 V it drops to 3.7 kA, so verify the available fault current at your system voltage before specifying.