ABB 1SDA063552R1 UVR T7-T7M-X1 220...240Va.c./d.c. Undervoltage Release

The ABB 1SDA063552R1 UVR T7-T7M-X1 220...240Va.c./d.c. is a factory-fitted undervoltage release accessory designed for ABB SACE EMAX2 series air circuit breakers (T7 and T7M-X1 frame). The UVR T7-T7M-X1 220...240Va.c./d.c. monitors supply voltage continuously and trips the circuit breaker automatically when the voltage drops below the preset threshold, providing critical protection for motors, transformers, and sensitive electrical installations. Rated at 220–240 V AC/DC, this compact release (105 × 135 × 55 mm, 0.302 kg) integrates directly into compatible EMAX2 breaker frames without external wiring adapters.

Technical Specifications

Certifications & Standards

• CE: Complies with applicable European Union directives for electrical equipment safety and electromagnetic compatibility.
• RoHS: Restriction of Hazardous Substances — free from restricted levels of lead, mercury, cadmium, and other hazardous materials per EU Directive 2011/65/EU.
• REACH: Compliant with EU REACH regulation (EC 1907/2006) governing chemical substance safety in electrical components.
• WEEE: Registered under the Waste Electrical and Electronic Equipment Directive for responsible end-of-life recycling and disposal.

Applications & Use Cases

• Undervoltage and no-voltage protection in industrial power distribution panels
• Motor control centres (MCCs) requiring automatic disconnection on supply failure
• Generator and UPS changeover systems where voltage dip detection is essential
• Process automation and control panel installations using ABB EMAX2 T7/T7M-X1 breakers
• Marine, infrastructure, and critical facility power protection applications