Auxiliary Contact SCHNEIDERE iOF 1 CO A9A26905, top terminals, 1 changeover contact

SCHNEIDERE auxiliary contact module iOF 1 CO A9A26905 is a compact add-on designed to provide one changeover (CO) contact with top-mounted terminals for straightforward wiring and integration into control panels. It attaches to compatible Schneider switching and protection devices to extend signaling and interlocking capabilities, allowing remote status feedback for motors, contactors and other automation equipment.

Advantages

The module offers one reliable changeover contact in a compact housing with top terminals that simplify installation in confined control cabinets. It supports clear electrical signalling and auxiliary feedback without altering the main device’s mechanical operation, enabling straightforward retrofitting and maintenance.

Suitable for

• Adding auxiliary signaling to contactors and motor starters
• Interlocking and sequence control in control panels
• Remote status monitoring for protection relays and circuit breakers
• Industrial and building automation installations requiring a single changeover contact

When it may not be suitable

This auxiliary contact provides only a single changeover contact; it may not be suitable where multiple auxiliary contacts or complex multi-contact arrangements are required. It is an add-on module intended to attach to compatible Schneider products, so it will not function as a standalone primary switching device.

Key specifications

• Contact configuration: 1 changeover contact (CO)
• Terminal orientation: top-mounted terminals for wiring convenience
• Mounting: designed as an auxiliary add-on to compatible switching/protection devices
• Function: signaling, interlocking and remote status feedback
• Typical application environment: industrial and building automation control panels

How to use

Attach the auxiliary contact module to the compatible Schneider device following the device manufacturer’s mechanical and electrical instructions. Connect control or signal wiring to the top terminals, ensuring proper torque and secure connections. Verify correct contact operation by actuating the main device and confirming changeover signalling on the connected control circuit. Perform insulation and continuity checks as part of commissioning.

What to consider before purchase

• Compatibility with the specific Schneider main device model you intend to mount it on
• Requirement for a single changeover contact versus multiple auxiliary contacts
• Available space in the control panel for top-terminal wiring access
• Electrical load and contact rating requirements for the intended signalling circuit

Usage recommendations

Use the module only with compatible Schneider devices and follow the manufacturer’s installation instructions. Ensure wires are correctly sized and terminated at the top terminals, and perform routine inspections to confirm reliable contact operation within the control system.