MCCB for line protection — 63 A, 3-pole, high interrupting capacity
The Siemens SENTRON 3VA2163-5JP32-0BC0 is a 3-pole 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 that ceiling. The interrupting capacity hits 187 kA at 240 V, 121 kA at 415/440 V, and still holds 75.6 kA at 500 V, dropping to 3.7 kA at 690 V — numbers that tell you this breaker is built for high-fault-current installations where upstream coordination matters.
Built-in undervoltage release and auxiliary switches
Communication function is onboard, so this breaker can talk to a higher-level system for remote monitoring or trip-event logging — useful for a panel that needs to report breaker status without pulling separate sense wires.
Dimensions are 105 mm wide, 181 mm high, 86 mm deep — standard MCCB footprint for a 3-pole 63 A frame. No special cutout beyond the standard DIN-rail slot or bolt pattern.
SCCR headroom for coordination studies
The 3.7 kA at 690 V is a sharp drop — that is the limit for 690 V systems, so if your line voltage is 690 V, verify the available fault current is under that.