The Siemens 3VA1163-5EE32-0HH0 is a 3-pole IEC frame 160 molded case circuit breaker with a 63 A thermal-magnetic trip unit (TM220). Breaking capacity class M delivers Icu=55kA at 415 V AC — enough for most industrial distribution panels where fault currents stay under that threshold. Overload protection is adjustable Ir=44A…63A via the dial; short-circuit pickup is fixed at Ii=10 x In. The integrated shunt trip (STL) operates on 12-30 V DC or 24 V AC 50/60 Hz, and the breaker ships with a nut keeper kit, two auxiliary switches (HQ), and one trip alarm switch (HQ).
What the Ratings Mean for Fit
The 55 kA Icu at 415 V is the ultimate short-circuit breaking capacity — the breaker can safely interrupt a fault up to that level once and still be functional afterward. For selectivity coordination downstream, the TM220 thermal-magnetic curve (fixed Ii=630 A) pairs with standard panelboard feeders. The shunt trip coil draws from a 24 V AC control transformer or a 12-30 V DC safety circuit; verify the coil's inrush doesn't drop the supply below the dropout voltage. Two HQ auxiliary switches plus one HQ trip alarm switch give status feedback for PLC inputs or remote annunciation.