ABB HK1-11 Auxiliary Contact

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1. Product Overview

The ABB HK1-11 Auxiliary Contact is an auxiliary contact module used in ABB industrial control systems to provide auxiliary signals for main contactors or circuit breakers.
It enables circuit status feedback, control signal transmission, and interlocking, widely used in motor control, PLC systems, and automation control circuits.

2. Main Technical Specifications (Typical)

• Model: HK1-11

• Product Type: Auxiliary Contact

• Contact Configuration: 1 NO + 1 NC

• Rated Voltage: AC 400V / DC 220V

• Rated Current: 6 A

• Mechanical Life: > 1,000,000 operations

• Electrical Life: > 100,000 operations

• Operating Time: Typically 10–20 ms

• Mounting: Directly mounted on main contactor or circuit breaker

• Operating Temperature Range: -25 ℃ to +55 ℃

3. Key Advantages and Features

1. Reliable Status Feedback

   • Provides reliable status information of main contactor or breaker

   • Supports signal feedback and interlocking

2. Fast Operation

   • Short operating time ensures timely response in control systems

3. Compact Modular Design

   • Small footprint, directly mounts on main devices

   • Easy system integration

4. Industrial-Grade Reliability

   • Vibration and interference resistant

   • Wide temperature range suitable for long-term use

5. High Compatibility

   • Compatible with ABB contactors and circuit breakers

4. Typical Applications

• Motor control system status feedback

• ABB industrial automation and drive systems

• PLC systems and automated production lines

• Contactor interlocking and signal transmission

• Control circuits for fans, pumps, compressors, and other equipment

5. Installation and Maintenance Notes

1. Verify Contact Configuration and Ratings

   • Ensure auxiliary contact type and rated voltage/current match the system

2. Power-Off Before Installation

   • Disconnect system power before installing or removing the contact

3. Proper Wiring

   • Ensure control signal wires are securely connected

   • Avoid crossing with high-voltage lines

4. Environmental Conditions

   • Avoid high temperature, humidity, and corrosive environments

   • Ensure proper ventilation inside the control cabinet

5. Periodic Inspection

   • Check contact status and operation

   • Ensure long-term stable system operation