The Siemens 3VA1180-5EE42-0AA0-ZD00 is a 4-pole circuit breaker in the 3VA1 IEC frame 160, rated In=80A with a breaking capacity class M — Icu=55kA at 415 VAC. The TM220 thermal-magnetic trip unit provides overload protection adjustable from Ir=56 A to 80 A, and fixed short-circuit protection at Ii=10 x In (800 A). This variant includes an ATFM (Adjustable Thermal Fixed Magnetic) trip, an unprotected N conductor, and a nut keeper kit, specified for DC Power OEM use in China.
What the Ratings Mean for Fit
The 55 kA Icu at 415 V places this in breaking capacity class M — it safely interrupts fault currents up to that level without upstream cascading, suitable for high-fault industrial panels. The 80 A frame and adjustable overload (56–80 A) let it match motor or feeder loads within that window. Fixed Ii at 10 x In means magnetic pickup at 800 A; verify coordination with downstream devices if selectivity is required.