Auxiliary contact SCHNEIDERE Acti9 iOF A9A26904 reversible lower terminals

The Auxiliary contact SCHNEIDERE Acti9 iOF A9A26904 is a reversible (changeover) auxiliary contact module designed to attach to compatible Acti9 protective and switching devices. It provides an additional switching contact via lower terminals to enable signaling, interlocking or remote indication in electrical distribution and control installations. The module is intended for direct integration with Acti9 circuit-breakers and other Acti9 family devices where an extra changeover contact is required to extend control or monitoring capabilities.

Advantages

This reversible auxiliary contact offers compact, dedicated functionality that preserves the footprint of the host Acti9 device while adding a reliable changeover contact. Mounting on the lower terminals simplifies connection and keeps wiring organized. The module supports common signaling and interlocking schemes used in distribution boards, enabling clearer status feedback and safer remote control without modifying the main device.

Suitable for (tasks / use cases)

• Adding status indication to Acti9 circuit-breakers and motor-protection devices
• Implementing interlock logic between protective devices in a distribution panel
• Remote signaling to control panels, alarm systems or PLC inputs
• Extending switching capabilities for automation and building management systems

When it may not be suitable

This auxiliary contact is designed specifically for use with compatible Acti9 devices and attaches via lower terminals; it is not a standalone switching device and will not function independently. It may not be suitable where a different contact configuration, higher current rating, or alternative mounting orientation is required. Verify mechanical and electrical compatibility with the target Acti9 host device before installation.

Key specifications

• Contact function: reversible / changeover (single changeover contact)
• Mounting location: lower terminals for integration with Acti9 devices
• Intended use: signaling, interlocking, remote indication within electrical distribution systems
• Compatibility: designed to integrate with Acti9 series protective and switching equipment
• Form factor: compact auxiliary module matched to the host device footprint

How to use

Attach the auxiliary contact module to the appropriate mounting points on the lower side of a compatible Acti9 device following the host device manufacturer instructions. Connect the external control or signal conductors to the lower terminals designated for the changeover contact, ensuring correct polarity and secure termination. Use the contact for remote indication circuits, interlock wiring or input signals to control systems, and test the switching action after installation to confirm correct operation.

What to consider before purchase

• Confirm physical and electrical compatibility with the specific Acti9 host device model you intend to equip
• Ensure the contact function (changeover) matches required control or signaling logic
• Check terminal size and wiring requirements for your installation
• Verify required environmental and thermal conditions for the distribution panel

Usage recommendations

Follow the Acti9 device installation guidelines and local electrical standards when fitting the auxiliary contact. Perform insulation and functional tests after connection, and include the module in routine maintenance checks to ensure reliable signaling and interlocking performance.