The Siemens 3VA1150-6GF42-0AA0-ZD00 is a 4-pole IEC frame 160 circuit breaker with a 70 kA breaking capacity at 415 V, class H. It's set up for line protection with a TM240 thermal-magnetic trip unit, adjustable overload protection from 35 to 50 A, and short-circuit pickup adjustable from 5 to 10 times In. The 100% rated neutral conductor protection and included nut keeper kit point to a DC power OEM application in China — that's another SKU I don't need to second-guess the specs on.
What the Ratings Mean for Fit
The 70 kA breaking capacity at 415 V means this breaker can safely interrupt fault currents up to that level without cascading upstream — critical for high-fault panels where SCCR coordination matters. The adjustable overload Ir (35–50 A) and short-circuit Ii (5–10× In) give you selectivity tuning for motor or transformer feeders without swapping trip units. The 100% neutral protection is non-standard for IEC gear; it's sized for DC power applications where the neutral carries full phase current, not just imbalance.
Panel Integration
Mounts on a standard DIN rail in the enclosure. The 4-pole footprint and nut keeper kit for DC power OEM suggest it's destined for a China-based DC power supply build — the keeper prevents hardware loss during panel assembly. Verify the TM240 curve coordinates with downstream devices; the adjustable Ii range gives you headroom for selective coordination with branch breakers.