The Siemens 3VM1220-4EE36-0AA2 is a 3-pole IEC frame 250 molded case circuit breaker rated 200 A continuous, with a breaking capacity of 36 kA at 415 V AC (class S). The TM220 thermal-magnetic trip unit provides overload protection adjustable from 140 A to 200 A (Ir) and a fixed short-circuit pickup at 10 x In (Ii = 2000 A). The ATFM designation indicates a fixed magnetic trip with thermal adjustment, so the installer sets Ir via the dial on the front face to match the downstream cable or load.
Integration Notes
The terminal connection accepts copper or aluminum conductors sized for 200 A; verify lug kit compatibility for the specific cable range on site.