The Siemens SENTRON 3VA2163-7MS36-0JL0 is a 3-pole molded case circuit breaker rated 63 A continuously from 40 °C up to 70 °C — no derating needed across that span, which simplifies panel thermal budgeting. Its breaking capacity hits 330 kA at 240 V and 242 kA at 415 V, giving you strong fault-clearing headroom for high-fault installations like transformer secondaries or large motor control centers. This is a starter-protection design, meaning the trip curve is shaped to coordinate with motor-start inrush — it holds through the start transient but clears a locked-rotor fault quickly.
Dimensions are 105 mm wide, 181 mm high, 86 mm deep. The 105 mm width is standard for a 3-pole MCCB in this frame size — it will fit existing SENTRON 3VA panel cutouts and busbar arrangements without rework. Power loss is a modest 4 W maximum, so ventilation requirements are minimal even in a dense enclosure.
The 63 A rating holds across the full 40–70 °C ambient range (–), which is unusual — most MCCBs start derating above 40 °C. The 330 kA at 240 V and 242 kA at 415 V are the interrupting ratings; they tell you this breaker can safely clear faults up to those levels without rupturing. For a 480 V system, the 242 kA at 440 V is the closest published figure — still very high, suitable for utility-grade fault duty.