The Siemens 3VA2563-5MN32-0JC0 is a 3-pole motor protection circuit breaker on the IEC frame 1000 platform, rated In=630A with an ETU350M LSI trip unit. The overload protection Ir is adjustable from 250A to 630A; short-circuit protection Isd is set between 3 and 15 times Ir, and the instantaneous pickup Ii is fixed at 15 times In.
The ETU350M LSI trip unit is field-adjustable: Ir dial sets the continuous current, Isd rotary switch sets the short-time pickup multiplier, and Ii is fixed at 15x In. The shunt trip (STL) coil draws its control voltage from a 110-127V source — verify polarity for DC operation; the auxiliary switches (2x HQ) are wired to the motor control center's digital inputs for breaker status and trip indication.