It carries a full-scale rating of 63 A and an initial adjustable thermal trip setting down to 16 A, giving the panel builder flexibility to tune the overload threshold to the actual load without swapping the breaker frame. The interrupting capacity tells the real story: 330 kA at 240 V AC, 242 kA at 415 V and 440 V, 187 kA at 500 V, and 3.7 kA at 690 V.
Thermal performance and derating
That flat curve is unusual; most MCCBs start to derate above 40 °C. It means the 3VA2163-7HM46-0AA0 can be packed into a warm enclosure or mounted near other heat sources without losing capacity. Maximum power dissipation is 4 W, low enough that multiple breakers in a panel do not create a cumulative heat problem.
Ground-fault monitoring and physical fit
This unit includes ground-fault monitoring via summation current formation on the L + N conductors — it measures the vector sum of line and neutral current to detect leakage to earth. That is a built-in residual current detection function, not just a shunt-trip accessory. If you need a shunt trip, UVR, or Modbus communication, that is a different 3VA2 order code.