Motor protection breaker, 630 A frame, 55 kA interrupting capacity
The Siemens 3VA2563-5MN32-0KA0 is a 3VA2 IEC frame 1000 circuit breaker rated for motor protection, carrying a 55 kA interrupting capacity at 415 V (breaking capacity class M). It is a 3-pole unit with an ETU350M electronic trip unit configured for LSI protection — long-time, short-time, and instantaneous. The continuous current rating In is 630 A, with overload protection Ir adjustable from 250 A to 630 A, short-circuit protection Isd from 3 to 15 times Ir, and a fixed instantaneous pickup Ii at 15 times In. A shunt trip (STL) coil rated 220–250 V DC / 208–277 V AC is integrated, along with a nut keeper kit.
The 3VA2 frame size 1000 occupies a defined footprint in the Siemens Sentron family; verify cut-out dimensions against your existing panel layout when retrofitting. The integrated shunt trip coil wiring terminates at the front-accessible terminals — route the control voltage (220–250 V DC or 208–277 V AC) through a separate protected circuit. The nut keeper kit retains the lug hardware during high-vibration installations such as near large contactors or motor starters.