ABB 1SFA611610R2020 Contact Block

• Product Overview

  The ABB 1SFA611610R2020 is a high-reliability auxiliary contact block designed to be used with control buttons, indicator switches, selector switches, or contactors to provide electrical status feedback and signal extension. Its compact structure, sensitive response, and long life make it a fundamental component in industrial automation control systems.

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  Main Technical Specifications

  • Model: 1SFA611610R2020

  • Product Type: Contact Block / Auxiliary Contact

  • Contact Configuration: 1 NO (Normally Open) + 1 NC (Normally Closed)

  • Rated Voltage: AC/DC ≤ 440 V

  • Rated Current: 5 A

  • Contact Material: Silver alloy contacts

  • Mechanical Life: ≥ 10,000,000 operations

  • Electrical Life: ≥ 200,000 operations

  • Mounting: Fits on control button/indicator base or DIN-rail compatible device

  • Operating Temperature: -25 ℃ to +70 ℃

  • Protection Class: IP20 (when installed inside panel or enclosure)

  • Standards: IEC/EN 60947-5-1, UL, CE

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  Key Advantages & Features

  1. Modular Structure

     • Easily mounts and dismounts with buttons, selector switches, or indicator modules.

  2. Reliable Contact Material

     • Silver alloy contacts provide low resistance and high arc resistance for stable switching.

  3. Long Service Life

     • Mechanical life ≥ 10 million operations and electrical life ≥ 200,000 operations for high-frequency use.

  4. Compact Size

     • Small footprint suitable for panel or enclosure design with limited space.

  5. Excellent Safety

     • Good contact isolation for safe status feedback and logical circuit switching.

  6. Wide Compatibility

     • Works with various ABB control components and third-party standard devices.

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  Typical Applications

  • Industrial automation control systems

  • PLC & DCS auxiliary signal acquisition

  • Motor start/stop indication and feedback

  • Machine panel logic control

  • Sequential logic monitoring on production lines

  • Packaging, manufacturing, and conveyor systems

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  Installation & Operation Notes

   

  • Ensure contact voltage/current ratings match the control circuit

  • Securely snap the module into the switch or base slot during installation

  • Avoid direct exposure to moisture, heavy dust, or corrosive atmospheres

  • Tighten wiring firmly to avoid loose connections and false operations

  • Do not remove the contact block while energized

  • Regularly inspect for contact wear or oxidation; clean or replace if necessary

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The structure and details of the product：

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