The Siemens SENTRON 3VA2463-5JP32-0KB0 is a 3-pole molded case circuit breaker rated for a continuous current of 630 A at 40 °C, with an ETU550 electronic trip unit configured for line protection. The 630 A figure is the base rating at 40 °C ambient; above that, the breaker derates linearly — 600 A at 45 °C, 570 A at 50 °C, 540 A at 55 °C, 510 A at 60 °C, 480 A at 65 °C, and 450 A at 70 °C. If your panel ambient runs at 50 °C, you're sizing for 570 A continuous, not the catalog 630 A. The ETU550 release gives you adjustable long-time pickup (0.5 to 12 s at tr) and short-time delay (0.5 s max at tsd), so coordination studies actually have something to work with. Breaking capacity varies sharply with system voltage: 187 kA at 240 V, 121 kA at 415 V, 55 kA at 440 V, 36 kA at 500 V, and 9 kA at 690 V. At 415 V — common in industrial distribution — the 121 kA rating covers most transformer-fed fault levels without cascading upstream. The breaker includes a communication function, so it can report status and trip events to a higher-level controller over the SENTRON bus system.
The breaker measures 138 mm wide, 248 mm high, and 110 mm deep. That 138 mm width (5.4 in) is the standard 3-pole SENTRON 3VA frame footprint — it drops into the same panel cutout as other 3VA breakers of this frame size.