The Onesto KC6-KU-240 is a robust 40-ampere, 2-pole miniature circuit breaker engineered for demanding electrical installations. Rated at 6KA breaking capacity and compliant with IEC60947-2 standards, this DIN rail-mounted device operates seamlessly across 240V and 415V systems at 50Hz. Designed for utilization category A applications, it delivers reliable protection in both industrial and domestic environments. The distinctive blue housing ensures easy identification on crowded distribution boards. This MCB combines precision engineering with practical durability, making it an essential component for comprehensive circuit protection in commercial and residential installations.