ABB 1SDA104943R1 Accessory - Under Voltage Coil (XT5-XT6)
Part Number: 1SDA104943R1
Quick Summary
ABB 1SDA104943R1 undervoltage release adds reliable protection for Tmax XT XT5-XT6 circuit-breakers in industrial control panels. It helps prevent nuisance trips caused by voltage sags, ensuring the breaker operates only when voltages return within the safe window. The solution aligns with IEC60947-2 and UL489 standards, with RoHS and REACH declarations supporting regulatory compliance. Designed for XT5 and XT6 compatibility, it streamlines procurement and installation while enabling safer, more predictable switching in automation cells. This accessory supports downtime reduction, safety improvements, and simplified spare-part management across critical processes.
Product Information
Extended Description
1SDA104943R1 ABB: YU XT5-XT6 110..127 Vac - 110..125 Vdc
Environmental Product Declaration - EPD
EPD Undervoltage releases Tmax XT XT5-XT6 (IT)
REACH Declaration
REACh Declaration ABB Sace circuit breakers
RoHS Information
RoHS Declaration ABB Sace circuit breakers
RoHS Status
Following EU Directive 2011/65/EU and Amendment 2015/863 July 22, 2019
Conflict Minerals Reporting Template (CMRT)
CMRT - Conflict Minerals Reporting Template
Toxic Substances Control Act - TSCA
Toxic Substances Control Act (TSCA) declaration
Environmental Information
Breakers - Packaging disposal information
Order Code US and Canada
KXTFYU4
E-Number (Finland)
3642170
E-Number (Norway)
4381365
EAN
8015644070359
Minimum Order Quantity
1 piece
Customs Tariff Number
85389099
Product Net Weight
0.108 kg
Package Level 1 Units
box 1 piece
Package Level 1 Width
110 mm
Package Level 1 Height
60 mm
Package Level 1 Depth / Length
140 mm
Package Level 1 Gross Weight
0.114 kg
Package Level 1 EAN
8015644070359
Product Main Type
Accessories for Tmax XT
Product Name
Accessory
Product Type
Accessory
Suitable For
XT5 | XT6
Suitable for Product Class
SACE Tamx XT
Configuration Type
Loose or configurable
Current Type
AC/DC
Order Multiple
1 piece
Rated Voltage (Ur)
110...127 V AC | 110...125 V DC
Standards
IEC60947-2 | UL489
Data Sheet, Technical Information
SACE Tmax XT IEC Low voltage molded case circuit-breakers Catalog | SACE Tmax XT UL/CSA Low voltage molded case circuit-breakers UL489 and CSA CS22.2 Standards Catalog
Declaration of Conformity - CE
Refer to the EU Declaration of the relative Circuit Breaker
Instructions and Manuals
YU - wired and non-wired undervoltage release for XT5 - XT6 fixed/plug-in circuit-breakers.
ETIM 8
EC001022 - Under voltage coil
ETIM 9
EC001022 - Under voltage coil
IDEA Granular Category Code (IGCC)
4148 >> Under voltage coil
UNSPSC
39121010
WEEE Category
5. Small Equipment (No External Dimension More Than 50 cm)
eClass
V11.1 : 27370417
Wide voltage range and AC/DC compatibility provide operation across fluctuating mains, reducing nuisance trips and enabling stable motor and process control in industrial settings. This translates to measurable downtime reduction and improved plant throughput in automation lines. The loose or configurable mounting option offers installation flexibility, allowing easy retrofits and plug-in or wired configurations without requiring extensive panel redesign. Compliance with RoHS, REACH, CMRT, and TSCA declarations simplifies regulatory risk management and supplier qualification for global projects. IEC60947-2 and UL489 alignment ensures acceptance across international electrical standards, supporting CE declarations and factory audits. The XT5-XT6 suitability delivers a proven fit for Tmax XT breakers, minimizing spare-parts inventories and accelerating maintenance workflows. Field teams gain confidence from datasheet-backed specifications and streamlined installation.
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FAQs
Yes. The 1SDA104943R1 is designed as an undervoltage release for Tmax XT5 and XT6 circuit-breakers, with a 110-127 VAC or 110-125 VDC coil rating and a loose or configurable installation approach. The recommended order code for US and Canada is KXTFYU4, ensuring proper integration with XT5/XT6 assemblies.
The accessory complies with IEC60947-2 and UL489, and carries RoHS and REACH declarations. It also has CMRT and TSCA declarations, aligning with global regulatory expectations and simplifying cross-border procurement and compliance audits.
Industries with critical automation and process control—such as manufacturing, utilities, and oil & gas—benefit from reduced nuisance trips and safer, more predictable switching. The XT5/XT6 compatibility makes it ideal for mid- to large-scale control panels where uptime is paramount.
By preventing unnecessary trips, it reduces unplanned downtime and extends equipment life. Its lightweight design (0.108 kg) and modular installation simplify field retrofits, lowering maintenance effort and spare-parts handling, which translates into a favorable total cost of ownership over the lifecycle of Tmax XT systems.
Data sheets and installation manuals are referenced in the product listing and the SACE Tmax XT catalog. For further support, contact ABB distributors or your AutomationDatabase account manager to access technical documentation, wiring diagrams, and compatibility notes for XT5/XT6 configurations.