What this MCCB is and what it does
The Siemens SENTRON 3VA2163-7MS36-0BC0 is a 3-pole molded case circuit breaker rated 63 A continuous at ambient temperatures from 40 °C up to 70 °C — no derating needed across that span. It's designed for starter protection, meaning it's built to handle motor inrush and coordinate with a contactor/overload pair in a motor control center or standalone panel. Interrupting capacity is the headline here: 330 kA at 240 V, 242 kA at 415 V and 440 V, 187 kA at 500 V, and 3.7 kA at 690 V. That 330 kA rating at 240 V puts it in the high-fault tier — sized for large transformer secondaries or busway feeds where available fault current is extreme. It ships with an undervoltage release (UVR) and two auxiliary switches HQ built in — no separate add-on module needed for those functions. The basic switch variant is 3VA2163-7MS36-0AA0, so this -0BC0 suffix adds the UVR and aux switches at the factory.
Panel fit and integration
Dimensions: 105 mm wide, 181 mm tall, 86 mm deep. That's a standard SENTRON 3VA2 frame footprint — drops into the same panel cutout and busbar pattern as other 3VA2 3-pole breakers. No ground-fault monitoring module on this variant, so if the spec calls for GF protection, you'll need an external relay or a different suffix. Maximum power loss is 6.5 W — negligible for thermal budgeting in a sealed enclosure, but worth noting if you're stacking multiple breakers in a small gland plate. Operating temperature range is -25 °C to 70 °C; storage from -40 °C to 80 °C.
How it compares to a sibling
The closest functional peer is 3VA2116-5HL32-0AK0 — a 3-pole 63 A MCCB without starter-protection design and without factory-fitted UVR and auxiliary switches.