Siemens 3VA1180-6EF42-0AA0-ZD00 — 80A IEC Frame 160 MCCB
The Siemens 3VA1180-6EF42-0AA0-ZD00 is a 4-pole molded case circuit breaker in the 3VA1 series, built on the IEC frame 160 platform. It carries a breaking capacity class H rating of Icu=70kA at 415V, meaning it can safely interrupt fault currents up to that level without upstream cascading — a key selectivity figure for panel builders coordinating downstream feeders. Rated at In=80A with a TM240 thermal-magnetic trip unit, the overload protection band is adjustable from Ir=56A to 80A, and the short-circuit magnetic trip (Ii) is fixed at 5 to 10 times In. This gives the specifying engineer flexibility to match the breaker to motor or distribution load curves without swapping trip units. The N conductor is unprotected on this variant, and the unit includes a nut keeper kit for DC Power OEM applications in China — a detail that matters for BOM traceability if the assembly line expects that specific hardware.
Integration Notes
Mounts on standard DIN rail or panel-mount via the frame 160 footprint. The nut keeper kit is pre-fitted for DC Power OEM builds — verify polarity and torque specs per the terminal marking on the breaker body. The TM240 thermal-magnetic trip provides line protection; no electronic trip unit adjustments beyond the Ir and Ii dials. For selective coordination studies, the Ii=5...10 x In range (400–800A magnetic pickup) should be plotted against downstream device let-through curves.