Siemens 3VA1 IEC frame 160, breaking capacity class N, 4-pole, TM220 thermal-magnetic trip unit, In=160A, overload protection Ir=112A...160A, short-circuit protection Ii=10 x In, 100% N conductor protection, nut keeper kit for DC Power OEM in China.
The TM220 trip provides adjustable overload protection from 112 A to 160 A (Ir), with a fixed short-circuit pickup at 10 x In (Ii = 1600 A). The 100% N-conductor protection means the neutral pole is fully rated, not reduced — important for 4-wire systems where harmonic currents or unbalanced loads can push neutral current near phase levels. A nut keeper kit is included for the DC Power OEM variant destined for China.
The breaker is rated for 25 kA Icu at 415 V, breaking capacity class N per IEC 60947-2.
Overload protection Ir is adjustable from 112 A to 160 A; short-circuit protection Ii is fixed at 10 x In (1600 A).
This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time.
Alternative models and sibling configurations in the same Siemens series. For obsolete or discontinued parts, these models can serve as compatible replacements or functional alternatives for plant maintenance.
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