The Siemens SENTRON 3VA2510-5KQ32-0DH0 is a 3-pole molded case circuit breaker rated for 1000 A continuous current (Iu) at 40–55 °C without derating, and 955 A at 60 °C, 885 A at 65 °C, 815 A at 70 °C. Its breaking capacity reaches 187 kA at 240 V, 121 kA at 415 V, and 53 kA at 690 V — figures that tell you it can interrupt high-fault currents on large distribution transformers or bus risers without cascading upstream. The ETU860 electronic trip unit gives you adjustable long-time delay (tr 0.5–25 s) and short-time delay (tsd 0.05–0.5 s), plus ground-fault monitoring via summation current sensing on the line conductors.
The breaker measures 210 mm wide, 320 mm high, and 120 mm deep — a 3-pole frame that fits standard SENTRON mounting plates. Front protection is IP40, so it's suited for enclosed switchgear where tools or fingers won't reach live parts. Communication function is built in, meaning it can report status and trip events to a higher-level system without an external module.