630 A MCCB with headroom for high-fault panels
The Siemens SENTRON 3VA2463-5HN32-0CL0 is a 3-pole molded case circuit breaker rated for 630 A continuous at 40 °C, with interrupting capacity of 187 kA at 240 V and 121 kA at 415 V — enough to handle most transformer-fed or generator-backed distribution sections without cascading upstream. The breaker carries a continuous-current derating curve from 630 A at 40 °C down to 520 A at 70 °C, so if the panel ambient runs hot (say 50 °C inside a non-ventilated enclosure), the usable rating drops to 593 A — plan the load schedule against that number, not the 40 °C sticker.
Interrupting capacity across voltage bands
At 690 V the interrupting capacity drops to 9 kA — this breaker is not intended for 690 V high-fault service. The 5670 A minimum and maximum rating (likely the magnetic trip threshold for short-circuit protection) is a fixed value on this variant — no adjustable short-time pickup, so selectivity with downstream breakers depends on that fixed magnetic band.
Active production, built-in undervoltage release
The basic switch (the replaceable switching mechanism) is order code 3VA2463-5HN32-0AA0 — if the breaker takes a fault that damages the contacts, you can swap the mechanism without pulling the entire enclosure.