What the ratings mean for your panel
The Siemens 3VA1116-6GE42-0AA0-ZD00 is a 4-pole IEC frame 160 molded case circuit breaker with a 70kA interrupting capacity at 415V — class H breaking capacity, meaning it clears high-fault currents up to that level without welding or rupturing, essential for main or feeder breakers in industrial distribution where the available short-circuit current is substantial. The TM220 thermal-magnetic trip unit gives you an overload adjustment range (Ir) from 112A to 160A, with fixed short-circuit pickup at 10x In (1600A). That 10x Ii setting suits motor branch circuits or transformer feeders where you need to ride through inrush without nuisance tripping, but verify coordination with downstream devices — the magnetic pickup is not adjustable on this variant. It includes 100% N-conductor protection, meaning the neutral pole is fully rated and protected — not just a switched neutral — so it's suitable for 4-wire systems where the neutral carries unbalanced load or harmonics. The nut keeper kit is a DC Power OEM option for China-market builds; it retains the terminal nuts during assembly in high-vibration environments.
Lifecycle and sourcing posture
Sourcing is straightforward: the part is quoted to order against an RFQ through independent distribution channels. Availability and current pricing are confirmed at quote time. No last-time-buy or phase-out constraints apply.
Integration notes
Mounts on a standard DIN rail or panel-mount baseplate — the 3VA1 frame uses a snap-on foot for rail mounting, with optional screw-mount adapter for high-vibration locations. The 4-pole configuration occupies roughly 140mm of DIN width; account for side-mounted auxiliary switch or shunt trip accessories if specified. The nut keeper kit (ZD00 suffix) is factory-fitted for DC Power OEM applications in China — it prevents terminal hardware loosening during transport and commissioning. If your application does not require this, verify the standard 3VA1116-6GE42-0AA0 variant meets your BOM.