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.

Product categories

Selection details for F10-20III-LB1 Auxiliary Switch (10NO+10NC) for Vacuum Circuit Breakers

To confirm the required auxiliary switch configuration for your project, include:

  • Number of normally open and normally closed contacts, contact sequence and switching duty
  • Shaft rotation, actuator travel, mounting holes and terminal arrangement
  • Control-circuit voltage and current, cabinet or mechanism drawing

Drawings and quotation requirements

Send the model reference, application, quantity and destination country together with the relevant drawing or existing equipment information. Confirm the selected configuration against a model-specific drawing and ratings sheet before ordering; request the applicable test documentation for your project requirements.

Request model confirmation and a technical quotation · Compare related Auxiliary Switch / F10 Series Auxiliary Switch.

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