ABB 1SDA104941R1 Undervoltage release - XT5/XT6 (UL489)
Part Number: 1SDA104941R1
Quick Summary
ABB 1SDA104941R1 Undervoltage release is a critical accessory for Tmax XT circuit breakers, preventing nuisance trips in control panels. Industrial environments frequently encounter undervoltage events that disrupt automation, causing costly downtime and rework. This release responds quickly to 24-30 V AC/DC signals, helping maintain safe, predictable switching behavior. It complies with IEC60947-2 and UL489 standards, and carries RoHS/REACH declarations plus CE conformity, supporting global production and installation. For panel builders and OEMs, the compact, loose or configurable configuration simplifies wiring and reduces design time. By standardizing on XT5/XT6 compatibility, it accelerates procurement, minimizes spare part variety, and improves serviceability across critical automation applications.
Product Information
Extended Description
1SDA104941R1 ABB: YU XT5-XT6 24...30 Vac/dc
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
KXTFYU1
E-Number (Finland)
3642172
E-Number (Norway)
4381363
EAN
8015644070335
Minimum Order Quantity
1 piece
Customs Tariff Number
85389099
Product Net Weight
0.109 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
0.115 kg
Package Level 1 EAN
8015644070335
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)
24...30 V AC | 24...30 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
Voltage range and compatibility align with 24-30 V AC/DC, designed as a loose or configurable undervoltage release for Tmax XT5-XT6. This tight voltage band reduces miscoordination during supply dips, delivering precise triggering that protects downstream motors and loads, and yielding fewer nuisance trips in dynamic industrial environments. Configurable installation options save wiring time and reduce error rates, enabling faster retrofits and easier field upgrades without replacing whole breaker modules. Compliance with IEC60947-2 and UL489 assures regulatory alignment across markets, while RoHS and REACH declarations simplify supplier qualification and cross-border procurement. The product is suitable for XT5 and XT6, with a compact footprint and straightforward mounting that streamline installation in control cabinets. Together, these features lower total cost of ownership by reducing downtime and maintenance complexity.
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FAQs
Yes. ABB 1SDA104941R1 is designed as a loose or configurable undervoltage release accessory specifically for Tmax XT5 and XT6 circuit breakers. It operates over a 24-30 V range (AC or DC) and integrates with XT5/XT6 frames to provide reliable undervoltage protection. Standard wiring practices apply, and it supports simple field upgrades without replacing the main breaker.
The accessory complies with IEC60947-2 and UL489 for low-voltage molded case breakers. It also carries RoHS and REACH declarations and CE conformity, ensuring regulatory alignment across global markets. These certifications help with proactive compliance during audits and support international installation and service programs.
Installers can configure the device as loose or configurable, allowing flexible routing within the panel. It supports 24-30 V AC/DC inputs and is intended for XT5/XT6 assemblies. When retrofitting, verify wiring polarity and ensure proper enclosure clearances. The result is faster commissioning, fewer wiring errors, and improved diagnostic clarity during maintenance.
motor control centers, automation panels, and power-distribution boards benefit most. By preventing nuisance trips caused by voltage dips, it stabilizes control loops and protects connected loads. This is especially valuable in environments with variable supply, long feeder runs, or critical uptime requirements, where downtime costs are high and regulatory compliance is essential.
The device reduces downtime by preventing false trips and simplifies spare-part management, lowering maintenance costs. Compatibility with XT5/XT6 streamlines procurement and reduces the variety of components in stock. Over time, that translates into faster repairs, less panel redesign, and measurable uptime improvements across manufacturing or process automation facilities.