The Siemens 3VM1220-5EE36-0AA2 is a 3-pole IEC frame 250 circuit breaker with a 200 A rated current and a 55 kA breaking capacity at 415 V. This puts it in breaking capacity class M, meaning it handles moderate fault levels typical for industrial distribution panels and motor control centers. The TM220 thermal-magnetic trip unit gives you adjustable overload protection from 140 A to 200 A and a fixed short-circuit pickup at 10 x In (2000 A).
What the Ratings Mean for Fit
The 55 kA Icu at 415 V is the ultimate breaking capacity — the maximum fault current the breaker can interrupt once without needing replacement. For most industrial panel applications fed from a 1000 kVA or smaller transformer, that's ample. The adjustable Ir (140–200 A) lets you match the breaker to the actual load cable ampacity, not just the frame rating. The fixed Ii at 10 x In means magnetic trips happen at 2000 A, which is typical for protecting feeder cables against bolted faults while riding through motor inrush.
Integration Notes
This breaker mounts on a standard DIN rail or can be screw-fixed to a backplate in a panel. The terminal connection type accepts copper cables sized for 200 A continuous; verify lug range against your wire gauge before terminating. The 3-pole block occupies about 3 x 27 mm of DIN space (standard 3VM1 footprint), so plan your enclosure fill factor accordingly. No auxiliary contacts or shunt trip are included in this order code — if you need remote tripping or status feedback, order those as separate accessories.