ABB 1SDA058266R1 Auxiliary Contact Module

1. Product Overview

The ABB 1SDA058266R1 Auxiliary Contact Module is an auxiliary contact extension unit designed for low‑voltage switchgear such as molded case circuit breakers. It provides additional open/closed auxiliary contacts for expanded control, interlock logic, or status feedback. The module interfaces with compatible ABB low‑voltage devices and changes state in sync with the main device action to support remote monitoring and control circuit extension.

2. Technical Specifications

• Model: 1SDA058266R1

• Product Type: Auxiliary contact module

• Contact Configuration:

  • 5 normally open contacts (5 NO)

  • 5 normally closed contacts (5 NC)

  • 2 reserved positions for expansion

• Compatible Equipment: ABB low‑voltage molded case circuit breakers and compatible devices

• Mounting Method: Add‑on installation cooperating with main device

• Output Type: Mechanically linked auxiliary contact outputs

• Operating Environment: Industrial control cabinets and low‑voltage distribution systems

• Standards Compliance: IEC and low‑voltage switchgear auxiliary contact standards

• Approx. Weight: ~400 g

• Intended Function: Open/closed position feedback and control signal extension

This module’s multi‑contact configuration supports complex control and signal feedback schemes in automation systems.Ralakde Automation

3. Advantages and Features

• Multi‑contact design with 5 NO and 5 NC contacts for flexible signal use.Ralakde Automation

• Reliable mechanical linkage that changes auxiliary contact states in sync with the main device.Rexel UK

• Modular add‑on style for convenient installation in control panels.Rexel UK

• Suitable for diverse control circuits in logic and feedback applications.Ralakde Automation

• Industrial‑grade durability for stable operation in low‑voltage control systems.Rexel UK

4. Typical Applications

• Auxiliary state feedback for molded case circuit breakers

• Interlock logic circuits in industrial automation

• Remote status monitoring and alarm systems

• PLC/DCS input expansion for control signals

• Electrical interlock and safety control logic

• Control panel power status indication

Auxiliary contact modules are commonly used when device position/status feedback is required, enhancing control system visibility and interlock protection.Rexel UK

5. Installation & Usage Notes

• Ensure the auxiliary contact module is compatible with the main device model before installation.

• Power must be disconnected before installing or removing the module.

• Tighten all connection terminals securely to avoid loose contacts and false signals.

• Auxiliary contacts are for low‑power signal circuits and should not be used for high‑power main circuit switching.

• Plan the use of contact outputs carefully to stay within rated current limits.

• Regularly inspect contact module operation and clean terminals to prolong service life.

The structure and details of the product： ​

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