What the ratings mean for your panel
This 3VA1150-5EF36-0AE0 is a 3-pole IEC frame 160 MCCB with a breaking capacity class M — 55 kA at 415 V AC. That Icu rating means it can safely interrupt a fault current up to 55 kA without welding contacts or cascading upstream, sized for distribution panels where the available fault current sits in the medium range. The TM240 thermal-magnetic trip unit gives you a fixed In of 50 A, with an adjustable overload Ir from 35 to 50 A (dial it to match the cable or load) and a short-circuit pickup Ii adjustable 5 to 10 times In — so between 250 and 500 A magnetic. The 4 HQ auxiliary switches (clamp connection) let you wire status feedback to a PLC or annunciator without a separate terminal block. Mounts on a standard DIN rail in the enclosure.