What this MCCB carries
The Siemens SENTRON 3VA2163-7KQ36-0AA0 is a 3-pole molded case circuit breaker (MCCB) rated for 63 A continuous current at up to 70 °C ambient — no derating needed across that range, which simplifies panel layout when the breaker sits near other heat sources. Its interrupting capacity hits 330 kA at 240 V and stays at 242 kA through 440 V, then drops to 187 kA at 500 V and 3.7 kA at 690 V. That 330 kA figure at 240 V tells you this breaker is sized for high-fault utility or transformer-fed panels where the available short-circuit current is substantial — you need that headroom to avoid cascading failure upstream. Rated insulation voltage is 800 V, and the breaker includes a communication function for integration with monitoring or energy-management systems — a feature that saves chasing down a separate add-on module later.
Where it fits in the panel
The 3VA2163-7KQ36-0AA0 measures 105 mm wide by 181 mm tall by 86 mm deep — a standard MCCB footprint that drops into most DIN-rail or panel-mount enclosures without re-drilling the gland plate. That 86 mm depth leaves room behind the door for wiring channels or a second row of breakers. Maximum power loss is 4 W, so ventilation requirements are modest — no forced-air cooling needed in a typical IP54 enclosure.