63 A MCCB with 330 kA interrupting rating
The Siemens 3VA2163-8JP42-0AA0 is a SENTRON molded case circuit breaker (MCCB) rated for 63 A continuous current across the full ambient temperature range from 40 °C to 70 °C — no derating needed up to the 70 °C operating maximum. Its 4-pole design with ETU550 electronic trip unit gives you adjustable long-time, short-time, instantaneous, and ground-fault protection curves for selective coordination in a distribution panel. Breaking capacity hits 330 kA at 415 V (440 kA at 240 V, 330 kA at 440 V, 220 kA at 500 V, 52.5 kA at 690 V), which puts this squarely in the high-fault-current class — sized for large transformer secondaries or industrial mains with stiff utility feeds where standard 50 kA or 65 kA MCCBs would weld closed on a bolted fault.
Panel fit and integration
Dimensions are 140 mm wide, 181 mm tall, and 86 mm deep.