ABB 1SDA066435R1 AUX-C 3Q+1SY 250Vac/dc XT2-XT4 W 3NO+1NC Withdrawable Auxiliary Contact

The ABB 1SDA066435R1 AUX-C 3Q+1SY 250Vac/dc XT2-XT4 W is a withdrawable-mount auxiliary contact block designed for use with ABB XT2 and XT4 series moulded case circuit breakers, providing 3NO+1NC signalling contacts rated at 250V AC/DC. Engineered for industrial control panels and automation systems, this compact accessory enables reliable status indication and remote signalling in demanding electrical installations. It complies with IEC 60947-2 and carries CE, RoHS, and UL489 certifications for global deployment.

Technical Specifications

Certifications & Standards

• IEC 60947-2: Compliant with international standard for low-voltage circuit breakers and their accessories
• UL489: Listed to UL standard for molded-case circuit breakers, molded-case switches, and circuit-breaker enclosures
• CE: Conforms to applicable European Union directives for sale within the EEA
• RoHS: Compliant with EU Directive 2011/65/EU (Restriction of Hazardous Substances) and Amendment 2015/863
• REACH: Compliant with EU REACH regulation concerning chemical substance safety
• EU Directive 2011/65/EU & Amendment 2015/863: Full compliance with the revised RoHS directive including updated restricted substance thresholds
• WEEE: Registered under the Waste Electrical and Electronic Equipment directive for responsible end-of-life recycling

Applications & Use Cases

• Status indication and remote signalling in motor control centres (MCCs)
• Feedback circuits in industrial automation and PLC-based control systems
• Interlocking and supervisory circuits in switchgear panels
• Integration with SCADA systems requiring breaker position feedback from XT2/XT4 MCCBs
• Control panel wiring in manufacturing, energy, and infrastructure installations