LS AU-1M 1b Side Auxiliary Contact 1NC

The LS AU-1M 1b is a side-mounted auxiliary contact block engineered for seamless integration with compatible LS electrical switchgear. This component features a 1NC (normally closed) configuration, serving as a critical interface for monitoring the operational status of the primary switching device. By providing reliable feedback, it ensures that control and signaling circuits function with high precision, contributing to the overall safety and efficiency of industrial and commercial electrical systems.

Advantages

The primary advantage of the LS AU-1M 1b lies in its robust design and ease of installation. As a side-mounted unit, it saves valuable space within electrical enclosures while maintaining a secure connection to the main contactor. Its 1NC contact configuration is specifically designed for applications requiring a normally closed state, offering consistent performance and durability in demanding environments. This auxiliary contact block is built to withstand frequent switching operations, ensuring long-term reliability for automated control systems.

Suitable for

• Industrial automation control panels
• Commercial building electrical distribution systems
• Signaling and status monitoring circuits
• Safety interlock applications

When it may not be suitable

This auxiliary contact is not suitable for applications requiring a normally open (NO) contact configuration, as it is strictly a 1NC device. It is also not compatible with switchgear brands or models outside of the specified LS series, and attempting to force a fit may result in mechanical damage or electrical failure.

Key specifications

• Contact configuration: 1NC (Normally Closed)
• Mounting type: Side-mounted
• Compatibility: LS electrical switchgear
• Function: Status feedback and signaling

How to use

To install the LS AU-1M 1b, ensure that the main electrical power supply is completely disconnected to prevent accidental contact. Align the auxiliary contact block with the designated side mounting interface on the main switchgear unit. Press the block firmly until it clicks into place, ensuring that the mechanical linkage is properly engaged. Once installed, connect the control circuit wiring to the terminals according to the electrical schematic of your system. Verify the connection by testing the continuity of the contact in both the open and closed positions of the main device.

What to consider before purchase

• Verify the compatibility of your existing LS switchgear model
• Confirm that your control circuit requires a 1NC (normally closed) contact
• Ensure there is sufficient physical space on the side of your contactor for the mounting block

Usage recommendations

Always perform a functional test of the auxiliary contact after installation and before putting the main electrical system into full operation to ensure the signaling circuit responds correctly to the switchgear status.