What this MCCB carries
The Siemens SENTRON 3VA2463-8JP42-0AA0 is a 4-pole molded case circuit breaker (MCCB) rated for line protection, with a continuous current Iu of 630 A at 40 °C. It uses the ETU550 electronic trip unit, which gives you adjustable long-time, short-time, instantaneous, and ground-fault protection curves — not a fixed thermal-magnetic, so you can dial in coordination with downstream breakers without swapping hardware. Breaking capacity runs 440 kA at 240 V, 330 kA at 415 V and 440 V, 220 kA at 500 V, and 52.5 kA at 690 V. That puts it in the high-interrupting range — sized for transformer secondaries or large bus feeds where fault current is serious. The 800 V rated insulation voltage (Ui) backs the 690 V switching capability. It carries a communication function and an optional motor drive, so it can be integrated into a remote-controlled distribution scheme — think PLC-triggered load shedding or SCADA-operated bus couplers. No undervoltage release or ground-fault monitoring version fitted as standard.
Thermal derating and panel fit
The 630 A rating is at 40 °C ambient inside the enclosure. At 45 °C it's 600 A; at 50 °C, 570 A; at 55 °C, 540 A; at 60 °C, 510 A; at 65 °C, 480 A; at 70 °C, 450 A. If your panel ambient runs hot — say next to a transformer or in a non-climate-controlled room — size the breaker for the derated current, not the nameplate 630 A. Dimensions are 248 mm high, 184 mm wide, 110 mm deep. Front protection is IP40 — fine for a clean indoor panel, but not for washdown or dust. Maximum power loss is 162 W; that heat has to be considered in the enclosure thermal calculation, especially if multiple breakers are ganged. Operating range is -25 °C to +70 °C; storage from -40 °C to +80 °C. The storage limit governs handling and shipping, not running — don't let a cold-soaked breaker sit in a freezing warehouse and then slam a full load on it without a warm-up cycle.
How it compares to the 3VA2010-8HL42-0AA0
The 3VA2010-8HL42-0AA0 is a smaller-frame MCCB — typically 100 A class, 3-pole, with a lower interrupting rating. The 3VA2463-8JP42-0AA0 is a full-size 630 A, 4-pole frame. They share the SENTRON 3VA platform and the same ETU trip family, but the 3VA2010 will not physically fit into a panel cutout designed for the 3VA2463, and vice versa. If your panel was specified around the 3VA2010, the 3VA2463 will not drop in without reworking the mounting and bus connections.