What this 3VA1 frame 160 MCCB carries
The Siemens 3VA1116-6EF42-0AA0-ZD00 is a 4-pole molded case circuit breaker on the 3VA1 IEC frame 160 platform, rated In=160A with a TM240 thermal-magnetic trip unit. Breaking capacity class H delivers Icu=70kA at 415 VAC — that's the maximum fault current it can safely interrupt without self-destruction, sized for high-fault industrial distribution panels where upstream transformers or large motor banks can push short-circuit levels into the tens of kiloamps. Overload protection is adjustable Ir=112A...160A; short-circuit pickup Ii=5...10 x In, so you set the magnetic threshold to ride through motor inrush or clamp down on a hard fault. The N conductor is unprotected (no internal trip on the neutral), and the unit ships with a nut keeper kit for DC Power OEM builds in China — same part, different passport.
Panel integration notes
Mounts on a standard DIN rail or directly to a backplate via the frame's screw-down lugs. The 4-pole footprint takes up roughly 140 mm of DIN width — account for that in your enclosure fill factor. TM240 thermal unit is non-interchangeable in the field; the Ir adjustment band (112–160 A) is set via rotary dials on the front face. No external auxiliary contacts or shunt trip are included in this base variant, so if you need remote trip indication or undervoltage release, order those as separate accessories that clip into the left-side accessory slot.