Breaking capacity — what the voltages tell you
The 3VA2163-5JQ46-0AA0: This MCCB delivers 187 kA at 240 V, 121 kA at 415 V and 440 V, 75.6 kA at 500 V, and 3.7 kA at 690 V. The steep drop at 690 V tells you this is a 500 V-class frame — it will interrupt a fault at 690 V, but only a low-energy one. For most industrial panels running 400/480 V distribution, the 121 kA rating covers high-fault scenarios like transformer secondaries or large motor short-circuits. The 187 kA at 240 V means it can sit on a 240 V bus with virtually any upstream transformer without coordination concerns.
Thermal performance — no derating up to 70 °C
Rated current holds at 63 A from 40 °C through 70 °C (–). That is unusual for an MCCB — most frames start derating above 40 °C. If this breaker lives in a hot enclosure near transformers or drives, you do not have to upsize the frame for ambient temperature. The maximum operating temperature is 70 °C, with storage from -40 °C to 80 °C.
Adjustability and ground-fault monitoring
The breaker has an adjustable thermal-magnetic trip: the Initial Value is 16 A and the Full-Scale Value is 63 A, meaning the continuous current pickup can be set anywhere between those limits via the dial. It does not have a Trip Indicator or Undervoltage Release. The ground-fault monitoring version uses summation current formation on the L + N conductor — it monitors the vector sum of phase and neutral currents, so it catches leakage to ground without a separate sensor. A Communication Function is present, which means it can report status or trip events over a bus — useful for a monitored distribution panel.
Mounting dimensions and panel fit
The MCCB measures 181 mm high, 140 mm wide, and 86 mm deep. The 140 mm width for a 4-pole frame is standard for SENTRON 3VA2 breakers — it occupies the same footprint as the 3VA2163-8HM32-0AA0. If you are swapping into an existing panel that was built around that alternate MPN, the mounting hole pattern and bus connection points are the same.