The Siemens 3VA1163-4ED46-0AB0 is a 4-pole IEC frame 160 molded-case circuit breaker rated for line protection with a TM210 thermal-magnetic trip unit. Its fixed overload protection is set at Ir = 63 A, and the fixed short-circuit protection trips at Ii = 10 × In — meaning it holds through motor inrush and clears a hard fault fast. The 36 kA breaking capacity at 415 V (class S) gives enough interrupting capability for most industrial distribution panels without stepping up to a larger frame. The N conductor is unprotected (no integral overload or short-circuit element on the neutral pole), and the breaker ships with clamp-type terminals for field wiring. Two built-in auxiliary changeover switches provide status feedback to a PLC or annunciator panel — useful for remote trip indication or load shedding logic.
Integration notes
The 3VA1 frame mounts on a DIN rail or can be screw-fixed to a backplate in a standard industrial enclosure. The clamp terminals accept copper or aluminum conductors within the rated cross-section range — verify lug compatibility for your wire size. The two auxiliary switches are pre-wired to the breaker's internal mechanism; no separate mounting or wiring of add-on blocks is required.