ABB 1SDA073750R1 AUX 4Q 400V E1.2-XT7-XT7M Auxiliary Contact Accessory for Air Circuit Breaker

The ABB 1SDA073750R1 AUX 4Q 400V E1.2-XT7-XT7M is a factory-designed auxiliary contact accessory for ABB Emax 2 series air circuit breakers, rated at 400V AC and engineered to provide reliable status signalling and control integration in industrial power distribution systems. Compact and precisely dimensioned at 220 mm × 40 mm × 500 mm with a lightweight 0.146 kg profile, the AUX 4Q 400V E1.2-XT7-XT7M delivers seamless compatibility with E1.2, XT7, and XT7M breaker frames. This accessory is an essential component for engineers configuring control panels, switchgear assemblies, and automated protection schemes that depend on accurate breaker position feedback.

Technical Specifications

Certifications & Standards

• CE: Meets European Union safety, health, and environmental protection requirements
• RoHS: Compliant with EU Restriction of Hazardous Substances Directive 2011/65/EU
• REACH: Compliant with EU REACH regulation on chemical substances (EC 1907/2006)
• ATEX: Certified for use in potentially explosive atmospheres per EU Directive 2014/34/EU
• VDE: Tested and certified by the German Association for Electrical, Electronic & Information Technologies
• WEEE: Registered under the EU Waste Electrical and Electronic Equipment Directive 2012/19/EU

Applications & Use Cases

• Breaker status signalling in main and sub-distribution switchboards
• Remote monitoring and SCADA integration for air circuit breaker position feedback
• Interlocking and protection schemes in industrial motor control centres (MCCs)
• Control panel wiring in oil & gas, petrochemical, and mining environments (ATEX-rated)
• Building automation and energy management systems requiring breaker open/closed indication