ABB 1SDA038320R1 UVD 220/250VE1/6-T7-X1-T8-E1.2/6.2-XT7/M Undervoltage Release Accessory for Circuit Breaker

The ABB 1SDA038320R1 UVD 220/250VE1/6-T7-X1-T8-E1.2/6.2-XT7/M is a factory-rated undervoltage release accessory designed for use with ABB SACE Tmax and Emax 2 series circuit breakers. This protective release module operates at 220/250V DC/AC, automatically tripping the associated circuit breaker when supply voltage drops below a defined threshold — safeguarding motors, drives, and critical loads from damage caused by undervoltage conditions. Compact and reliable, it integrates directly into compatible breaker frames for seamless panel-building.

Technical Specifications

Certifications & Standards

• CE: Conforms to European Union safety, health, and environmental protection requirements
• RoHS: Compliant with EU Directive 2011/65/EU — restriction of hazardous substances in electrical and electronic equipment
• REACH: Compliant with EU REACH Regulation (EC) No 1907/2006 on chemical substance safety
• WEEE: Registered under EU Directive 2012/19/EU for waste electrical and electronic equipment disposal requirements

Applications & Use Cases

• Undervoltage protection for motor control centers and distribution boards incorporating ABB SACE Tmax T6, T7, T8 and Emax 2 / Emax E1.2, E6.2 series breakers
• Protection of sensitive industrial loads — motors, drives, and automation controllers — against supply voltage sags and outages
• Integration into MCC panels, generator switchgear, and busbar protection assemblies requiring automatic tripping on voltage loss
• Industrial automation and process control installations where nuisance undervoltage events must trigger a controlled breaker open state