The Siemens 3VA1110-3GD42-0AA0-ZD00 is a 4-pole IEC frame 160 molded case circuit breaker (MCCB) in breaking capacity class N, rated for 25 kA Icu at 415 V AC. It carries a fixed 100 A thermal-magnetic trip unit (TM210) with Ir = 100 A overload protection and instantaneous short-circuit pickup set at 10 x In. The 100% N-conductor protection and included nut keeper kit mark this as a variant built for DC Power OEM applications in China.
The 4-pole configuration suits three-phase plus neutral applications where the neutral must be switched and protected at full phase current — common in distribution sub-feeds for industrial control panels. The nut keeper kit simplifies field wiring for DC Power OEM builds.