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. Designed for line protection, it uses the ETU550 electronic trip unit, which gives you adjustable long-time, short-time, instantaneous, and ground-fault curves for selective coordination downstream. The interrupting ratings hit 330 kA at 240 V and 242 kA at 415 V, so it safely clears high-fault scenarios without cascading upstream breakers.
What the Ratings Mean for Your Panel
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 800 V rated insulation voltage (Ui) tells you the breaker is built for 690 V systems with headroom. 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.
Panel Fit and Integration
At 86 mm deep, 140 mm wide, and 181 mm tall, this MCCB fits standard SENTRON 3VA panel cutouts and busbar systems. 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. IP40 on the front means it's protected against tools and wires >1 mm entering the breaker face, but the enclosure needs to handle the rest of the IP rating.