The Siemens 3VA2163-5HN36-0AA0 is a SENTRON molded case circuit breaker (MCCB) rated for 63 A continuous current across the full ambient range from 40 °C to 70 °C — no derating needed up to that ceiling. It carries three poles and an ETU350 electronic trip unit, designed for line protection in distribution panels.
Breaking capacity and what it means for your fault level
At 240 V the interrupting rating is 187 kA; at 415 V and 440 V it holds at 121 kA; at 500 V it drops to 75.6 kA; at 690 V it is 3.7 kA. These are the maximum fault currents the breaker can safely clear at each voltage — critical for verifying the available short-circuit current at the installation point. The 187 kA at 240 V is among the highest in this frame size, so it suits high-fault industrial services where a standard MCCB would cascade upstream.
Dimensions and panel fit
The breaker measures 105 mm wide, 181 mm high, and 86 mm deep. That 86 mm depth is the projection behind the panel face — relevant when planning gland-plate clearance or enclosure depth. The 105 mm width is the standard 3-pole MCCB footprint for this SENTRON generation; it fits the same cutout as earlier 3VA frames.