What this 800 A MCCB delivers
The SENTRON 3VA2580-5HN32-0DC0 is a 3-pole molded case circuit breaker rated for a continuous current of 800 A, with an interrupting capacity of 187 kA at 240 V, 121 kA at 415 V, and 53 kA at 690 V — figures that cover most industrial distribution and motor branch circuits up to those fault levels. The ETU350 electronic trip unit provides adjustable long-time (tr: 0.5–17 s), short-time (tsd: 0.04–0.4 s), and instantaneous (li: up to 8000 A) protection, letting you shape the curve to coordinate with downstream breakers and upstream transformers.
The breaker carries its full 800 A rating from 40 °C through 60 °C ambient; at 65 °C it derates to 767 A, and at 70 °C to 703 A — per the datasheet, no additional correction factor needed for standard panel ambient up to 60 °C. Mounting dimensions are 210 mm wide, 320 mm high, and 120 mm deep — a standard 3-pole MCCB footprint that fits most DIN-rail or backplate layouts in 800 A switchboards.