The Siemens 3VA1116-3EE42-0AA0-ZD00 is a 4-pole IEC frame 160 molded case circuit breaker rated for line protection, with a breaking capacity class N achieving Icu=25kA at 415 V. It carries a thermal-magnetic trip unit (TM220, ATFM) with an In=160 A rating, overload protection adjustable Ir=112 A...160 A, and fixed short-circuit protection set at Ii=10 x In.
The fixed Ii=10 x In (1600 A magnetic pickup) means the instantaneous trip is non-adjustable; if your inrush or starting current exceeds that multiple, you need a different trip curve or a higher frame. The unprotected neutral conductor signals this is a 3-pole + switched neutral configuration — the neutral pole does not have overload or short-circuit protection, so it must be sized and coordinated accordingly in the distribution design.
Deployment Context
The nut keeper kit indicates it is prepared for DC Power OEM builds, likely in a solar combiner box or battery distribution panel where the DC rating and the China-origin kit simplify procurement for that supply chain.