Ensuring safe activation/deactivation of electric equipment under load, 3KD series includes 6-pole switch disconnectors designed for PV systems in which voltages up to 1,200 Vdc are generated. Permissible AC operating voltage tolerance of 3- and 4-pole units meets requirements of IEC 60947 standard for wind farms. While able to safely power down systems with voltages of 690 Vac (+10%), series is suitable for currents up to 1,600 A and can be used as repair and emergency stop switches.