F10-20III-LB1 Auxiliary Switch (10NO+10NC) for Vacuum Circuit Breakers – High-Voltage Mechanism Control & Interlocking Signal Switch

The F10-20III-LB1 is a high-performance 10NO/10NC auxiliary switch specifically designed for the secondary control circuits of high-voltage circuit breakers and disconnecting switches. It serves as a critical component for opening/closing signal control and interlocking protection, ensuring safe operational logic in various electric operating mechanisms. This versatile switch is compatible with a wide range of spring-operated actuators and vacuum circuit breakers, including models such as VS1 (ZN63), ZN12, 3AF, ZN65, FZN25, CT19, and CTD. With its multi-stage contact design and durable housing, the F10-20III-LB1 can also be utilized as a changeover or combination switch in demanding industrial power distribution environments.