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  • F10-6 circuit breaker control switch 3no3nc
F10-6 circuit breaker control switch 3no3nc

F10-6 Auxiliary Switch 3NO3NC for Circuit Breakers

Model: F10-6

Description

The F10-6 auxiliary switch is designed for medium-voltage and high-voltage (MV/HV) switchgear and vacuum circuit breakers (VCBs). Operating via direct mechanical linkage, this component provides reliable contact switching, signaling, and electrical interlocking by precisely synchronizing with the primary contacts of the switching device
  • Structure and Features
  • Technical parameters

Structural & Performance Engineering

Flame-Retardant Modular Housing: The shell is molded from high-dielectric, flame-retardant tracking-resistant plastics. The segmented modular structure ensures stable insulation resistance between adjacent circuits and allows for precise phase alignment.

Mechanical Status Indexing: Features a distinct green positioning indicator on the rotor shaft. This ensures accurate alignment with external operating levers during assembly, mitigating risks of signaling lag or phase mismatch.

Silver-Alloy Contact System: Internal contacts utilize a silver-alloy material to minimize contact resistance and optimize thermal dissipation. Engineered to handle DC inductive control loads, preventing contact welding and oxidation under continuous operations.

Faston Tab Terminals: Equipped with heavy-duty male spade terminals to ensure vibration-proof connections. This layout supports quick-connect wiring harnesses typical in standardized switchgear production lines.

 

Technical Specifications

Parameter Specification
Contact Configuration 3NO + 3NC (3 Normally Open + 3 Normally Closed)
Rated Voltage (Ue) AC 220V / 380V; DC 110V / 220V
Conventional Thermal Current (Ith) 10A
Terminal Type Faston / Spade terminals (tab type)
Drive Operation Rotary shaft shaft-driven mechanical linkage

Auxiliary Switch Dimensional Drawing

Aux switch

Applications

The F10-6 auxiliary switch is integrated into secondary control and protection circuits within power distribution systems:

State indication and electrical interlocking for indoor/outdoor vacuum circuit breakers (VCBs).

Position signal feedback for high-voltage disconnectors and earthing switches.

Control loop switching inside metal-clad switchgear (such as KYN28A types) and Ring Main Units (RMUs).

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