Siemens 3VA1110-6GD42-0AA0-ZD00 is a 3VA1 IEC frame 160 circuit breaker with a breaking capacity class H rating of Icu=70kA @ 415V. Overload protection is set at In=100A with fixed Ir=100A; short-circuit protection is fixed at Ii=10 x In. The N-conductor protection is set at 100%.
For a 415V distribution panel, that gives substantial headroom against high-fault utility feeds or large transformer secondaries. The TM210 trip unit means a thermal-magnetic with a 10x In magnetic trip threshold, suited for motor starting inrush or transformer energization where nuisance tripping from harmonics is a concern.
Deployment Context
The 4-pole configuration covers three-phase plus neutral, with 100% N-conductor protection — important where the neutral carries significant harmonic current (e.g., VFD-fed loads or LED lighting banks). The nut keeper kit is a panel-builder touch: it prevents the busbar connection hardware from vibrating loose in high-vibration environments like conveyors or compressors.