The Siemens 3VA2580-6HN32-0BL0 is a SENTRON molded case circuit breaker (MCCB) rated for 800 A continuous current at 40 °C, holding that rating flat through 60 °C before derating to 767 A at 65 °C and 703 A at 70 °C. That thermal curve means it handles full load in most ventilated enclosures without forced cooling — important when the panel runs warm near other high-current gear. Breaking capacity sits at 242 kA at 240 V, 187 kA at 415 V, and 74 kA at 690 V — figures that cover high-fault utility feeds and large motor branch circuits where SCCR requirements push past typical 65 kA or 100 kA frames. The 3-pole design with ETU350 electronic trip unit gives adjustable long-time (tr 0.5–17 s), short-time (tsd 0.04–0.4 s), and instantaneous (Ii up to 8000 A) protection curves, letting you coordinate downstream breakers without nuisance trips.
Front IP40 protection suits panel-mount installations behind a sealed enclosure door. Dimensions of 320 mm height, 210 mm width, and 120 mm depth fit standard switchgear cubicle layouts; the 120 mm depth leaves clearance for rear-connected busbars or cable ladders.
The ETU350 electronic trip unit is a microprocessor-based design with adjustable LSI protection (long-time, short-time, instantaneous).