What this 3VA1 frame 160 breaker delivers
The Siemens 3VA1116-3GE42-0AA0-ZD00 is a 4-pole IEC frame 160 molded case circuit breaker rated for line protection with a TM220 thermal-magnetic trip unit. Its interrupting capacity hits 25 kA at 415 V (breaking capacity class N), which means it can safely clear a fault up to that level without upstream fuses or a larger frame — a key spec for panel selectivity studies and SCCR compliance per IEC 60947-2.
Trip settings and protection profile
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.