Siemens 3VA1463-6GF42-0AA0-ZD00 — 630A IEC Frame Breaker with 70kA Breaking Capacity
The Siemens 3VA1463-6GF42-0AA0-ZD00 is a 4-pole IEC frame 630 circuit breaker in the 3VA1 series, rated for a breaking capacity class H with Icu=70kA at 415V. That 70kA interrupting rating means it can safely clear a bolted fault up to that level without the arc flash propagating upstream — critical for main or feeder duty in a panel where the available fault current is high. Overload protection is set via the TM240 ATAM trip unit, adjustable Ir from 440A to 630A, and short-circuit pickup Ii adjustable 4 to 8 times In. The N conductor is protected at 100%.
What the Ratings Mean for Fit
The 70kA Icu at 415V puts this breaker in class H — the highest standard breaking capacity for the 3VA1 frame. If your panel's available fault current is under 70kA symmetrical, this breaker coordinates cleanly with downstream devices without needing a current-limiting fuse upstream. The TM240 ATAM thermal-magnetic trip gives you a continuous current rating of 630A with an overload adjustment band of 440A to 630A, so you can dial in the exact motor or feeder load without swapping trip units. The short-circuit magnetic pickup at 4 to 8 times In (2,520A to 5,040A) lets you ride through motor inrush while still clearing a bolted fault fast. The 4-pole construction with 100% N protection means it's suited for three-phase plus neutral systems where the neutral carries full phase current — common in data center PDUs or UPS output panels.
Deployment Context
This breaker mounts on a standard DIN rail or panel-mount base inside an enclosure. At 630A frame size, it's a main breaker or large feeder breaker — not a branch device. The nut keeper kit noted in the description (for DC Power OEM in China) suggests this particular variant includes hardware for secure bolted connections on the line and load side, which is standard for high-current terminations where vibration or thermal cycling could loosen lugs.