63 A MCCB with 187 kA interrupting capacity — line protection for high-fault panels
The Siemens SENTRON 3VA2163-5JP32-0DA0 is a 3-pole molded case circuit breaker rated for 63 A continuous current across the full ambient range from 40 °C to 70 °C — no derating needed up to that ceiling. Its interrupting capacity hits 187 kA at 240 V and still delivers 121 kA at 415 V and 440 V, which puts it squarely in high-fault-duty panels where upstream transformer or bus capacity demands a breaker that won't cascade failure. The line-protection design means it's tuned for feeder and main breaker duty, not motor branch-circuit protection. An integrated undervoltage release is built in — when control voltage drops below the dropout threshold, the breaker trips. That saves adding a separate shunt-trip module and the wiring to it. Communication function is present, so it can report status to a higher-level system over the SENTRON bus.
Panel fit — dimensions and mounting
The 3VA2163-5JP32-0DA0 measures 105 mm wide, 181 mm tall, and 86 mm deep. That 86 mm depth is the key dimension for enclosure depth planning.
Selectivity and coordination — what the interrupting ratings mean
The 187 kA at 240 V and 121 kA at 415 V are the maximum fault currents this breaker can safely interrupt. For selectivity studies, the 63 A frame with those ratings coordinates well downstream of a larger-frame SENTRON (e.g., 160 A or 250 A frame) on the same bus. The 3.7 kA at 690 V is a sharp drop — if your system runs 690 V, verify the available fault current is below that threshold.