What this 3VA1 breaker carries
The Siemens 3VA1120-3GF42-0AA0-ZD00 is a 4-pole IEC frame 160 circuit breaker with breaking capacity class N — rated Icu=25kA at 415 V. The overload protection band runs Ir=14 A to 20 A, and the short-circuit magnetic pickup is adjustable Ii=8 to 16 times In. This variant is configured for a DC Power OEM based in China.
The 4-pole form factor handles three-phase plus neutral, common in IEC panel builds for industrial or commercial sub-distribution. The nut keeper kit simplifies torque-down on the line and load terminals — a small detail that saves time during panel wiring.