ABB S280 1901 R0008 Auxiliary contact signal

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1. Product Description

The ABB S280 1901 R0008 Auxiliary Contact Signal Module is an electrical accessory designed for low-voltage circuit breakers or contactors, providing circuit status monitoring, signal feedback, and remote control functionality. It is compatible with the S280 series breakers and delivers reliable electrical signals via switch state changes, enabling integration with control, alarm, or automation systems. The module features compact design and easy installation for industrial, commercial, and infrastructure applications.

2. Technical Specifications

• Model: S280 1901 R0008

• Type: Auxiliary Contact Signal Module

• Compatible Devices: ABB S280 series circuit breakers

• Contacts: 1 NO (Normally Open) + 1 NC (Normally Closed)

• Rated Current: 6 A AC/DC

• Rated Voltage: AC 400 V / DC 250 V

• Mechanical Life: ≥ 20,000 operations

• Electrical Life: ≥ 10,000 operations

• Mounting: Direct installation on breaker module

• Operating Temperature: -25 ℃ to +60 ℃

• Protection Class: IP20

• Standards Compliance: IEC 60947-5-1, CE

3. Advantages and Key Features

• Reliable signal feedback
  Provides NO/NC contacts for breaker or contactor status signals for remote monitoring and alarms.

• Compact installation
  Directly mounts on S280 series breakers, saving control panel space.

• High durability
  Long electrical and mechanical life suitable for frequent industrial operations.

• Safety and reliability
  IP20 protection ensures safe operation and signal transmission.

• Easy maintenance
  Modular design allows easy replacement and servicing without affecting breaker operation.

4. Typical Applications

• Circuit breaker status monitoring in industrial automation

• Remote alarm and control in commercial and office buildings

• Remote control and signal acquisition in distribution panels

• Power monitoring and energy management systems

• Electrical status feedback for production lines and machinery

5. Precautions

• Disconnect power before installation or maintenance to ensure safety.

• Ensure contact rated voltage and current match the control or alarm equipment.

• Avoid installation in humid, dusty, or corrosive environments.

• Regularly inspect contacts and terminals to ensure reliable signal transmission.

• When paired with S280 series breakers, ensure secure installation to prevent loosening or misoperation.

The structure and details of the product：

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