What the ratings mean for fit
The 3VA1180-3GE42-0AA0-ZD00 is a Siemens 3VA1 IEC frame 160 molded-case circuit breaker with a 25 kA Icu breaking capacity at 415 V, class N. That 25 kA rating at 415 V tells you it safely interrupts fault currents up to that level without upstream cascading — critical for panel selectivity studies. The 80 A In with TM220 thermal-magnetic trip provides overload protection adjustable from 56 A to 80 A (Ir) and fixed short-circuit protection at 10 x In (Ii = 800 A). The 4-pole configuration with 100% N-conductor protection suits three-phase plus neutral distribution where the neutral is fully rated, not reduced.
Deployment context
The nut keeper kit for DC Power OEM in China indicates it ships with hardware for DC-bus applications. The 3VA1 frame accepts plug-in accessories that snap into the front accessory slot without removing the breaker from the bus.