ABB 1SFN165103R1000 Main contact

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1. Product Overview

The ABB 1SFN165103R1000 is a Main Contact designed for ABB high-power AC contactors. It is a critical current-carrying component responsible for making and breaking the main power circuit. The performance of the main contact directly affects operational safety, reliability, and service life.

As an original ABB spare part, this main contact is manufactured using high-conductivity and arc-resistant silver alloy materials, making it suitable for high-current and frequent switching industrial applications.

2. Technical Specifications

• Model: 1SFN165103R1000

• Product Type: Main Contact

• Applicable Equipment: ABB high-power AC contactors (corresponding SFN series models)

• Number of Poles: Single pole (used in three-pole assemblies)

• Rated Operational Voltage (Ue): Up to AC 690 V

• Rated Insulation Voltage (Ui): 1000 V

• Rated Operational Current (Ie): According to the matched contactor rating

• Contact Material: Silver alloy (Ag-based composite)

• Mounting: Internal, replaceable design

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

• Standards: IEC 60947-4-1

3. Advantages & Features

1. Original ABB Design
   Fully compatible with ABB contactor mechanical and electrical structures.

2. High Electrical Conductivity
   Low contact resistance reduces heat generation and power loss.

3. Excellent Arc Resistance
   Suitable for frequent switching and heavy-duty applications.

4. Extended Contactor Service Life
   Replacement restores original performance and reliability.

5. Flexible and Cost-Effective Maintenance
   Allows partial or full contact replacement based on maintenance needs.

6. Reliable Under Heavy Loads
   Stable operation under high current and high load conditions.

4. Application Areas

• Industrial motor control systems

• Maintenance and servicing of AC contactors

• Power distribution and control panels

• Pumps, fans, and compressors

• Metallurgy, mining, and chemical industries

• Automation system maintenance

5. Notes & Precautions

1. Always disconnect the power supply before replacement.

2. Ensure full compatibility between the main contact and the contactor model.

3. Keep contacts clean and free from contamination during installation.

4. It is recommended to replace all poles simultaneously for consistency.

5. Check contact pressure and alignment after installation.

6. Perform periodic inspections to monitor contact wear and condition.