The Siemens 3VA2510-5HN32-0HL0 is a SENTRON molded case circuit breaker rated for line protection, 3-pole, with a continuous current rating of 1000 A at 40 °C through 55 °C — it holds full ampacity across that band, then derates to 955 A at 60 °C, 885 A at 65 °C, and 815 A at 70 °C. That thermal profile means you can run it in a warm enclosure without stepping down the frame size, as long as the ambient stays under 55 °C. Breaking capacity is 187 kA at 240 V, 121 kA at 415 V, and 53 kA at 690 V — that's high enough for most industrial main or feeder duty where fault current runs high. The ETU350 electronic trip unit gives you adjustable long-time pickup (Ir) from 0.5 to 1.0 × In, short-time pickup and delay, and instantaneous pickup (Ii) up to 10 000 A. That's a lot of coordination range for selective tripping downstream. Physical footprint: 210 mm wide, 320 mm tall, 120 mm deep.
Mounts in a standard MCCB footprint — 210 mm wide, 320 mm tall, 120 mm deep. That is a 3-pole frame that fits most switchboard or panelboard cutouts.