The Siemens 3VA1450-6GF42-0AA0-ZD00 is a 4-pole IEC frame 630 circuit breaker with breaking capacity class H, rated Icu=70kA at 415 V. It is configured for line protection with a TM240 thermal-magnetic trip unit, ATAM electronic release, and a rated current In=500 A. Overload protection Ir is adjustable from 350 A to 500 A; short-circuit protection Ii is set at 5 to 10 times In. The N conductor is protected at 100%.
Deployment Context
Rated for 70 kA breaking capacity at 415 V, this breaker is sized for high-fault-current industrial panels — typically main or feeder protection in a switchboard. The 4-pole configuration with 100% N protection suits three-phase systems where the neutral must be switched and protected (e.g., IT or TN-S networks). The nut keeper kit indicates a DC Power OEM application in China, so the breaker may be integrated into DC-side distribution or inverter output circuits.