ABB 1SDA066149R1 AUX-C 1Q+1SY 250 Va.c./d.c. A1-A2 3p-4p Auxiliary Contact Accessory for Moulded Case Circuit Breaker

The ABB 1SDA066149R1 AUX-C 1Q+1SY 250 Va.c./d.c. A1-A2 3p-4p is a factory-designed auxiliary contact accessory for ABB FORMULA series Moulded Case Circuit Breakers (MCCBs), providing 1 switching contact (1Q) plus 1 signalling contact (1SY) rated at 250 V AC/DC across terminals A1–A2, compatible with 3-pole and 4-pole MCCB frames. This compact add-on integrates directly into the circuit breaker housing, enabling remote status indication and supervisory control in industrial distribution and automation panels.

Technical Specifications

Certifications & Standards

• CE: Compliant with applicable European Union directives for electrical equipment
• RoHS: Restriction of Hazardous Substances — compliant with EU Directive 2011/65/EU
• REACH: Compliant with EU REACH regulation on chemical substances
• EU Directive 2011/65/EU & Amendment 2015/863: Fully compliant with the updated RoHS2 substance restrictions
• WEEE: Waste Electrical and Electronic Equipment Directive compliant — supports responsible end-of-life recycling

Applications & Use Cases

• Remote circuit breaker status monitoring in industrial motor control centres (MCCs)
• Supervisory signalling in building management systems and energy distribution panels
• Auxiliary switching for PLC inputs in automation and process control cabinets
• Panel-board protection signalling in commercial and industrial installations
• Integration with SCADA systems requiring MCCB open/closed or trip status feedback