Circuit breaker accessory Schneider Electric NSYCAF223 - auxiliary contact module

Schneider Electric NSYCAF223 auxiliary contact module is an accessory designed to attach to compatible Schneider circuit breakers and provide additional signalling capabilities. It supplies one or more auxiliary contacts that change state with the breaker, enabling remote status indication, interlocking functions and integration with control and monitoring systems in electrical panels for commercial and industrial installations.

Advantages

The auxiliary contact module offers reliable mechanical coupling to the breaker mechanism for accurate status reporting and minimal contact bounce. It is compact and intended to maintain the breaker’s original footprint while adding remote signalling without modifying the primary protection device. The module simplifies integration with automation equipment and building management systems by providing clear normally-open and/or normally-closed contact outputs that reflect breaker position.

Suitable for

• Remote indication of breaker ON/OFF status in distribution panels
• Interlocking circuits and safety control loops
• Integration with PLCs, BMS and alarm systems
• Panel retrofits where space and non-invasive add-ons are required

Key specifications

• Auxiliary contact functionality for signalling breaker status
• Mechanical interface designed for compatibility with specified breaker range
• Contacts arranged as normally-open and/or normally-closed outputs
• Compact form factor suitable for panel mounting adjacent to the breaker
• Intended for use in commercial and industrial electrical installations

How to use

Mount the auxiliary contact module onto the compatible Schneider circuit breaker according to the breaker manufacturer’s mounting instructions so that the mechanical actuator engages correctly with the breaker operating mechanism. Connect the contact outputs to the control, monitoring or interlock wiring using appropriate terminal connections and wiring practices. Ensure that all connections are made with the supply disconnected and in compliance with local electrical regulations and safety standards. Verify correct operation by toggling the breaker and confirming the contact state changes at the remote monitoring equipment.

Usage recommendations

Use the accessory only with compatible Schneider breakers and consult product documentation to confirm mechanical and electrical compatibility. Install in enclosures that provide adequate protection and follow applicable wiring, earthing and isolation procedures. Periodically inspect connections and contact operation as part of routine panel maintenance to ensure reliable signalling.