The Siemens 3VA2463-5HL32-0KJ0 is a 3-pole IEC frame 630 circuit breaker with a 55 kA breaking capacity at 415 V (class M), fitted with an ETU320 LI trip unit. Rated at 630 A, the overload protection (Ir) is adjustable from 250 A to 630 A, and the short-circuit protection (Ii) from 1.5x to 9x In. It includes a left-side shunt trip rated for 208–277 V AC 50/60 Hz or 220–250 V DC, plus two auxiliary changeover switches.
What the Ratings Mean for Fit
The 55 kA Icu at 415 V is the ultimate short-circuit breaking capacity — the breaker can safely interrupt a fault up to that level once and still carry rated current afterward. For selectivity studies, the ETU320 LI trip unit gives you adjustable long-time (overload) and instantaneous (short-circuit) protection, letting you coordinate with downstream devices on a distribution panel or motor control center. The shunt trip on the left side allows remote tripping from a safety circuit or emergency-stop chain, using either AC or DC control voltage.
Deployment Context
This breaker mounts in a standard IEC distribution panel or switchboard — the 3VA2 frame is designed for fixed or plug-in installation with busbar connection. The integrated nut keeper kit simplifies panel wiring by holding the terminal nuts captive during assembly.