ABB 1SDA066399R1 UVR-C XT1..XT4 F/P 220-240Vac-220-250Vdc Undervoltage Release Tmax XT Fixed/Plug-in

The ABB 1SDA066399R1 UVR-C XT1..XT4 F/P 220-240Vac-220-250Vdc is a factory-fitted undervoltage release accessory designed for use with ABB Tmax XT series moulded case circuit breakers (XT1 through XT4) in both fixed and plug-in mounting configurations. This compact release module monitors supply voltage and automatically trips the circuit breaker when voltage drops below a defined threshold, protecting motors, drives, and sensitive industrial loads from damage caused by undervoltage conditions. With a dual-rated coil accepting 220–240V AC or 220–250V DC control voltage, it offers broad compatibility across AC and DC control circuits in industrial panels and switchgear assemblies.

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
• EU Directive 2011/65/EU: RoHS2 compliance for restriction of hazardous substances in electrical equipment
• Amendment 2015/863: Compliant with the RoHS3 amendment extending the list of restricted substances
• REACH: Compliant with EU REACH regulation on chemical substances
• IEC 60947-2: Meets international standard for low-voltage switchgear — circuit breakers
• UL 489: Listed under UL standard for molded-case circuit breakers
• WEEE: Compliant with EU Waste Electrical and Electronic Equipment Directive for responsible disposal

Applications & Use Cases

• Protection of motors and drives against undervoltage trips in industrial installations
• Integration into MCC (Motor Control Centres) using ABB Tmax XT1–XT4 moulded case circuit breakers
• Machine builder and OEM panel builds requiring automatic disconnection on supply voltage loss
• Industrial automation control panels with 220–240V AC or 220–250V DC control voltage rails
• Switchgear assemblies where both fixed and plug-in breaker versions are deployed