ABB 1SDA066426R1 AUX-C 3Q L 250Vac/dc XT1 Tmax XT Auxiliary Contact Accessory 250V AC/DC

The ABB AUX-C 3Q L 250Vac/dc XT1 (SKU: 1SDA066426R1) is a factory-designed auxiliary contact accessory for the Tmax XT1 series moulded case circuit breaker, rated at 250V AC/DC. Engineered to extend the signalling and monitoring capability of XT1 breakers, this accessory enables status feedback and remote indication in control panels and industrial automation systems. Compact at 110 × 140 × 60 mm and weighing just 0.121 kg, it integrates seamlessly without increasing the overall breaker footprint.

Technical Specifications

Certifications & Standards

• CE: Complies with European Union product safety and electromagnetic compatibility directives.
• IEC 60947-2: Meets the international standard for low-voltage switchgear and controlgear — circuit breakers and accessories.
• UL 489: Listed to the UL standard for molded-case circuit breakers, molded-case switches, and circuit-breaker enclosures (North American market).
• RoHS: Restriction of Hazardous Substances — free from lead, mercury, cadmium, and other restricted materials.
• REACH: Compliant with EU regulation on the registration, evaluation, authorisation, and restriction of chemicals.
• WEEE: Compliant with the EU Waste Electrical and Electronic Equipment directive for end-of-life recycling obligations.

Applications & Use Cases

• Status monitoring and remote indication in motor control centres (MCCs)
• PLC input signalling for breaker open/closed/tripped state in industrial automation panels
• Building management and energy monitoring systems requiring breaker feedback
• Integration with SCADA and BMS platforms via auxiliary contact signals
• Machine tool and process control panels where the Tmax XT1 MCCB is installed