What this 800 A MCCB does for a critical-feed panel
Its interrupting capacity hits 440 kA at 240 V, 242 kA at 415 V and 440 V, 187 kA at 500 V, and 73.5 kA at 690 V — numbers that give selectivity headroom for a transformer-fed main or a high-fault motor branch in a data center or industrial plant. Thermal performance holds 800 A flat from 40 °C through 60 °C, then derates to 767 A at 65 °C and 703 A at 70 °C — a curve that matters when this breaker sits in a warm switchboard or a non-air-conditioned enclosure.
Panel fit and mounting constraints
The 3VA2580-7MQ32-0AA0 measures 320 mm high, 210 mm wide, and 120 mm deep — a 3-pole frame that bolts into a standard MCCB cutout on a backplate or DIN-rail adapter.