Siemens 3VA1110-6GD42-0AA0-ZD00 is a 3VA1 IEC frame 160 circuit breaker with a breaking capacity class H rating of Icu=70kA @ 415V. It is a 4-pole unit configured for line protection with a TM210 thermal-magnetic trip unit. 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%. This variant includes a nut keeper kit and is designated for DC Power OEM in China.
What the Ratings Mean
Icu=70kA @ 415V is the ultimate short-circuit breaking capacity — the maximum fault current the breaker can safely interrupt once without needing replacement afterward. 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
Mounts in a standard panel or enclosure on a DIN rail or mounting plate. 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.