ABB 1SDA054911R1 AUX-C T4-T5-T6 3Q 1SY 250 Vac/dc Auxiliary Contact Accessory for Moulded Case Circuit Breaker

The ABB 1SDA054911R1 AUX-C T4-T5-T6 3Q 1SY 250 Vac/dc is a factory-designed auxiliary contact accessory for ABB Tmax T series moulded case circuit breakers (T4, T5, and T6 frames). Rated at 250V AC/DC, this accessory provides reliable signalling and status indication in industrial control panels and switchgear assemblies, enabling remote monitoring of breaker open/close position. Compact and pre-engineered for direct mounting, it integrates seamlessly into automation and protection schemes.

Technical Specifications

Certifications & Standards

• CE: Compliant with European Union directives for electrical equipment safety and electromagnetic compatibility
• RoHS: Restriction of Hazardous Substances — free from lead, mercury, cadmium, and other restricted materials
• REACH: Compliant with EU REACH regulation on chemical substance safety
• IEC: Designed and tested in accordance with relevant IEC standards for low-voltage switchgear accessories
• WEEE: Registered under the Waste Electrical and Electronic Equipment directive for responsible end-of-life recycling

Applications & Use Cases

• Remote status signalling (open/close indication) for Tmax T4, T5, and T6 moulded case circuit breakers
• Integration into industrial motor control centres (MCC) and power distribution switchboards
• Control panel auxiliary circuit wiring for automation and SCADA systems
• Building and industrial facility management systems requiring breaker position feedback