The Siemens 3VA1463-4GE42-0AA0-ZD00 is a 4-pole IEC frame 630 circuit breaker rated for line protection, carrying a breaking capacity class S with Icu=36kA at 415V. It uses a TM220 thermal-magnetic trip unit with ATFM (adjustable thermal fixed magnetic) — overload protection Ir adjustable from 440A to 630A, short-circuit protection fixed at Ii=8 x In. The N conductor is protected at 100%.
Deployment context
Rated for 630A continuous, this breaker is sized for main feeder or large motor branch circuits in IEC switchgear and panelboards. The 36kA interrupting capacity at 415V gives headroom for high-fault installations — typical of industrial distribution where SCCR coordination matters. The 4-pole configuration handles three-phase plus neutral, common in North American and IEC mixed-load panels.