The Siemens 3VA1463-6GE42-0AA0-ZD00 is a 3VA1 IEC frame 630 molded case circuit breaker with breaking capacity class H, rated Icu=70kA at 415 VAC. It is a 4-pole unit configured for line protection with a TM220 thermal-magnetic trip unit, ATFM (adjustable thermal fixed magnetic) release, and a rated current In=630A. Overload protection Ir is adjustable from 440A to 630A; short-circuit protection Ii is fixed at 8 x In. The N conductor is protected at 100%. This variant includes a nut keeper kit and is specified for DC Power OEM applications in China.
What the Ratings Mean for Fit
The 70 kA breaking capacity at 415 V (class H) means this breaker can safely interrupt fault currents up to that level without upstream devices needing to coordinate — critical for high-fault installations like transformer secondaries or large motor control centers. The 630 A frame and adjustable overload (440–630 A) let it serve as a main or feeder breaker in a 400 V distribution panel. The 4-pole configuration with 100% N protection suits systems where the neutral conductor must be switched and protected, common in certain IEC markets.
Deployment Context
Mounts in a standard IEC distribution panel or switchboard. The nut keeper kit simplifies busbar connection during panel assembly. The TM220 thermal-magnetic trip provides time-delayed overload and instantaneous short-circuit response — no external trip unit or power supply needed.