The Siemens 3VA1110-3GF42-0AA0-ZD00 is a 4-pole IEC frame 160 molded case circuit breaker with breaking capacity class N. It's rated Icu=25kA at 415V AC, which means it can safely interrupt fault currents up to that level without upstream devices needing to clear the fault — a key spec for panel selectivity studies. The TM240 trip unit gives you thermal-magnetic overload protection adjustable from Ir=70A to 100A, with short-circuit pickup Ii set at 5 to 10 times In. That 100A continuous rating and the 4-pole construction (switching all three phases plus neutral) make it a fit for three-phase line protection where you need full neutral switching, common in North American-derived distribution schemes or genset paralleling.
What the Ratings Mean for Fit
The 25kA Icu at 415V is the ultimate breaking capacity. The service breaking capacity Ics is typically 100% of Icu on this class N frame.
Deployment Context
This breaker mounts in a standard IEC frame 160 panel footprint — it's a direct-fit replacement for existing 3VA1 installations. The 4-pole configuration with 100% neutral protection means it's suited for TN-S or TN-C-S systems where the neutral must be switched and protected. The nut keeper kit (included per the order code suffix) is a small but welcome detail for panel builders — it keeps the terminal nuts captive during wiring, saving time on assembly. The DC Power OEM in China designation on the description flags that this specific variant was configured for an OEM customer; verify the trip curve and accessory compatibility against your application, as the factory-set parameters may differ from a standard catalog version.