ABB S2C-H11R Auxiliary Contact

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1. Product Overview

The ABB S2C‑H11R is an auxiliary contact assembly designed to work with circuit breakers, contactors, and other electrical devices to provide remote status feedback, interlocking logic, and control indication. This auxiliary contact module is easy to install and provides reliable switching feedback, effectively extending the control and monitoring capabilities of the primary device.

2. Main Technical Specifications

3. Advantages and Features

1. Reliable Status Feedback
   The combination of NO and NC contacts provides accurate feedback of the main device status.

2. Standardized Design
   Designed for direct interface with compatible main devices using industrial standard fittings.

3. Long Mechanical & Electrical Life
   Durable design supports repeated switching with consistent performance.

4. Easy Installation
   Modular form factor allows quick installation and future expansion.

5. Versatile Usage
   Enhances status and interlock logic for breakers, contactors, relays, and control systems.

4. Typical Applications

• Status feedback on low‑voltage circuit breakers and contactors

• Input signal expansion for PLC / DCS systems

• Interlocking and control logic in electrical panels

• Status indication and alarm systems

• Signal acquisition in automation equipment

5. Installation and Operation Notes

1. Correct Selection
   Ensure the auxiliary contact configuration matches the control logic required.

2. Safe Wiring
   Power down before installation; follow the wiring diagram for safe signal connection.

3. Environmental Conditions
   Avoid installing in damp, dusty, corrosive, or high‑temperature environments.

4. Compatibility Check
   Confirm the module is compatible with the host breaker/contactor model.

5. Periodic Inspection
   Regularly check contact surfaces and mounting integrity to maintain reliable performance.

The structure and details of the product：

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