The Siemens SENTRON 3VA2163-8HL36-0AA0 is a 3-pole molded case circuit breaker (MCCB) rated for 63 A continuous current, built around the ETU320 electronic trip unit.
Breaking capacity and what it means for your panel
This MCCB delivers 440 kA at 240 V, 330 kA at 415 V and 440 V, 220 kA at 500 V, and 52.5 kA at 690 V. For a 480 V panel, the 330 kA rating at 440 V is the closest reference — that's well above what most industrial service entrances will ever see, so this breaker has headroom even on high-fault-capacity transformers.
Trip unit and thermal performance
The ETU320 is an electronic trip unit with adjustable overload (Ir) and short-time (Isd) pickup settings, plus fixed instantaneous (Ii) and ground-fault (Ig) if equipped — this variant ships without ground-fault monitoring. The breaker holds its full 63 A rating across the entire ambient range from 40 °C to 70 °C, which is unusual; most MCCBs start derating above 40 °C. That means you don't have to oversize the frame for a hot panel environment.
Dimensions are 105 mm wide, 181 mm tall, 86 mm deep — a standard 3-pole MCCB footprint that drops into SENTRON panelboards and most DIN-rail mounting plates. Power loss is only 3.1 W maximum, so heat buildup in a tightly packed panel is minimal.