ABB 1SDA054910R1 AUX-C T4-T5-T6 1Q 1SY 250 Vac/dc Auxiliary Contact Accessory for Moulded Case Circuit Breaker

The ABB 1SDA054910R1 AUX-C T4-T5-T6 1Q 1SY 250 Vac/dc is a factory-rated auxiliary contact accessory designed for ABB SACE Tmax T4, T5, and T6 moulded case circuit breakers. Rated at 250V AC/DC, this auxiliary contact block provides reliable position signalling and remote status indication, making it an essential component for control panel integration and industrial automation applications. Compact in design at 110 × 60 × 140 mm and weighing just 0.139 kg, it installs seamlessly into Tmax MCCB assemblies.

Technical Specifications

Certifications & Standards

• CE: Compliant with European Union directives for electrical equipment safety and electromagnetic compatibility.
• IEC: Designed and tested in accordance with applicable IEC standards for low-voltage switchgear accessories.
• RoHS: Compliant with the Restriction of Hazardous Substances Directive — free from restricted materials including lead, mercury, and cadmium.
• REACH: Manufactured in conformity with REACH regulation (EC No. 1907/2006) governing chemical substance safety.
• WEEE: Registered under the Waste Electrical and Electronic Equipment Directive for responsible end-of-life disposal and recycling.

Applications & Use Cases

• Remote open/closed position signalling of Tmax T4, T5, and T6 MCCBs in motor control centres (MCCs)
• Control panel status indication and supervisory control systems
• Industrial automation and process control integration
• Building automation and energy management systems requiring circuit breaker feedback signals