The Onesto KC3E-350 is a robust 3-pole miniature circuit breaker engineered for industrial and commercial electrical installations. Rated at 50A with a 3kA breaking capacity, this DIN rail-mounted device operates across single and three-phase systems at 240V/415V. Compliant with IEC60947-2 standards and optimized for 50Hz applications, it delivers reliable protection in utilization category A environments. The grey finish ensures durability in demanding conditions. Essential for safeguarding circuits against overloads and short circuits with precision switching performance.