Auxiliary contact Schneider Electric LADN22 2NO 2NC front-mounted

The Schneider Electric LADN22 auxiliary contact is a front-mounted accessory that adds two normally open (2NO) and two normally closed (2NC) contacts to compatible contactors and motor starters. It is designed to provide additional switching points for status signaling, interlocking and control circuit extensions without changing the main device. The compact front-mounted format allows installation on the operator-facing side of the device to simplify wiring and visual access.

Advantages

This auxiliary contact provides a combination of normally open and normally closed contacts in a single module, enabling versatile control logic and feedback functions. Front mounting makes retrofitting straightforward, keeping the original device footprint intact while extending functionality. The module is manufactured to industry standards and intended for reliable operation within electrical control panels, offering predictable switching behaviour for monitoring and interlock applications.

Suitable for

• Adding feedback signals to contactors and motor starters for remote indication
• Implementing electrical interlocks where both NO and NC contacts are required
• Control circuits requiring extra auxiliary contacts for sequential logic or safety monitoring
• Retrofitting existing installations without replacing the main switching device

When it may not be suitable

This front-mounted auxiliary contact is intended for use with compatible contactors and motor starters; it may not be appropriate where the host device does not support front-mounted accessories or when panel space and access prevent front installation. It is not a substitute for primary power switching devices and should not be used as the main breaker or overload protection element.

Key specifications

• Contact configuration: 2 normally open (2NO) + 2 normally closed (2NC)
• Mounting type: front-mounted accessory
• Application: status signaling, interlocking and control circuit extension
• Compatibility: designed for use with compatible Schneider Electric contactors and motor starters

How to use

Install the module on the front of a compatible contactor or motor starter following the equipment manufacturer’s mechanical and electrical instructions. Ensure power to the control circuit is isolated before fitting the accessory. Connect the auxiliary contact outputs to the control or indication circuits using appropriately rated wiring and secure terminals. After installation, verify contact operation by energizing the main device and checking that the NO and NC contacts change state as expected.

What to consider before purchase

• Confirm mechanical compatibility with your specific contactor or motor starter model and the availability of front-mounted accessory slots
• Verify the electrical ratings and switching capacity required by your control circuit
• Ensure access for installation and future maintenance on the front side of the device

Usage recommendations

Use this auxiliary contact exclusively as an accessory for control and signaling purposes. Verify compatibility with the main device and follow the manufacturer's installation guidelines and local electrical codes. Regularly inspect connections and operation as part of routine maintenance to ensure correct switching and interlock performance.