What this 630 A MCCB brings to the panel
The Siemens SENTRON 3VA2463-5JP32-0BA0 is a 3-pole molded case circuit breaker rated for 630 A continuous current at 40 °C, with a thermal derating curve that drops to 450 A at 70 °C — so if your panel ambient runs hot, that's the number that governs the load it can carry.
Current rating and thermal reality
The 630 A rating at 40 °C is the headline number, but the real-world capacity drops stepwise: 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.
This MCCB delivers 187 kA at 240 V, 121 kA at both 415 V and 440 V, 75.6 kA at 500 V, and 17 kA at 690 V. For most 400 V-class industrial distribution, the 121 kA rating gives comfortable fault-clearing headroom.
Trip unit and auxiliary releases
The ETU550 electronic trip unit handles overcurrent protection with adjustable settings. No auxiliary contacts are fitted as standard; if you need status feedback, you'll add them externally.