Siemens SENTRON 3VA2163-7JP42-0AA0 — 63 A MCCB with ETU550 Trip Unit
The Siemens SENTRON 3VA2163-7JP42-0AA0 is a 4-pole molded case circuit breaker (MCCB) rated for 63 A continuous current at 40 °C through 70 °C, meaning it holds its full rating across the typical panel ambient range without derating — that keeps the line moving in a warm cabinet.
The 63 A frame is flat-rated across the full 40–70 °C operating range — no summer derate to watch for when the enclosure hits 60 °C. The ETU550 release is a communicating trip unit (communication function yes), so it can report status and fault data over the SENTRON bus — useful for a controls integrator tying breaker status into a PLC without hardwiring aux contacts.
The 4-pole design covers three-phase plus neutral switching — typical for TN-S or TT systems where you need to isolate the neutral on a fault.