ABB 1SDA104958R1 YU-C XT5-XT6 F/P 220..240Vac-220..250Vdc Under Voltage Coil Tmax XT Fixed/Plug-in

The ABB 1SDA104958R1 YU-C XT5-XT6 F/P 220..240Vac-220..250Vdc is an under voltage coil (UVR) designed for use with ABB Tmax XT5 and XT6 series moulded case circuit breakers in both fixed and plug-in mounting configurations. The YU-C XT5-XT6 F/P 220..240Vac-220..250Vdc operates across a dual AC/DC voltage range — 220–240 V AC and 220–250 V DC — enabling reliable tripping of the circuit breaker whenever the supply voltage drops below a preset threshold, protecting critical loads and motor circuits from damaging undervoltage conditions.

Technical Specifications

Certifications & Standards

• CE: Compliant with EU machinery and low-voltage directive requirements
• RoHS: EU Directive 2011/65/EU — restriction of hazardous substances in electrical and electronic equipment
• REACH: EU Directive 2015/863 — compliance with chemical substance registration and restriction regulations
• IEC 60947-2 / UL 489: Manufactured and tested to international standards for low-voltage circuit breakers and accessories
• IEC 60947: Broader IEC standard covering low-voltage switchgear and controlgear
• WEEE: EU Waste Electrical and Electronic Equipment Directive — product registered for responsible end-of-life disposal

Applications & Use Cases

• Protection of motor circuits against harmful undervoltage conditions in industrial control panels
• Integration into Tmax XT5 and XT6 circuit breakers for automatic tripping on voltage loss
• Use in building automation, manufacturing lines, and critical infrastructure where supply continuity monitoring is required
• Fixed and plug-in MCCB installations requiring dual AC/DC undervoltage release capability