ABB 1SDA123546R1 Moulded Case Circuit Breaker - IEC 60947-2
Part Number: 1SDA123546R1
Quick Summary
ABB 1SDA123546R1 Moulded Case Circuit Breaker protects DC circuits in industrial automation installations. Selecting the right protection device for high-current DC networks can be challenging, risking downtime and compatibility issues during panel upgrades. This model aligns with IEC 60947-2 and RoHS, with CE conformity and an EPD option that supports sustainability reporting. Designed for control panels and DC drives, it delivers reliable protection with a compact footprint, front-terminal installation, and a thermomagnetic release that reduces mis-tripping in demanding environments. The result is safer operation, easier maintenance, and optimized cabinet space for efficiency gains across the automation stack.
Product Information
Extended Description
1SDA123546R1 ABB: C.BREAKER TMAX XT2L 160 DC FIXED THREE-POLE WITH FRONT TERMINALS AND THERMOMAGNETIC RELEASE TMA R 50
ABB EcoSolutions
Yes
ABB Site Meeting Group Waste To Landfill Target
UL 2799 Zero Waste To Landfill Validation available
End Of Life Disassembling Instructions
Disassembly instructions Tmax XT XT2 TM
Environmental Product Declaration - EPD
EPD Tmax XT XT2 TM (CN)
Recyclability Rate of the Product acc. to EN45555
Design for Closing Resource Loops - Standard EN45555 - 55.7 %
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)
Document availability on demand
Customs Tariff Number
85362000
Product Net Width
90 mm
Product Net Height
130 mm
Product Net Depth / Length
82.5 mm
Product Net Weight
1.2 kg
Product Name
Moulded Case Circuit Breaker
Product Type
CB
Version
F
Current Type
DC
Mechanical Durability
25000 cycle | ;240 cycles per hour
Number of Poles
3P
Power Loss
at Rated Operating Conditions per Pole 4.09 W
Rated Current (In)
50 A
Rated Impulse Withstand Voltage (Uimp)
8 kV
Rated Insulation Voltage (Ui)
1000 V
Rated Operational Voltage
500 V DC
Rated Service Short-Circuit Breaking Capacity (Ics)
(250 V DC) 2 Poles in Series 85 kA | (500 V DC) 3 Poles in Series 85 kA
Rated Ultimate Short-Circuit Breaking Capacity (Icu)
(250 V DC) 2 Poles in Series 85 kA | (500 V DC) 3 Poles in Series 85 kA
Rated Uninterrupted Current (Iu)
160 A
Release
TMA
Release Type
TM
Short-Circuit Performance Level
L
Standards
IEC 60947-2 | GB/T 14028.2
Sub-type
XT2
Terminal Connection Type
Fixed Circuit-Breakers
Declaration of Conformity - CE
EC Declaration of Conformity Tmax XT2
Instructions and Manuals
Installation instructions XT2 DC IEC
WEEE Category
5. Small Equipment (No External Dimension More Than 50 cm)
Feature → Business Impact → Application: The XT2L 160 DC fixed 3P MCB with TMA thermomagnetic release delivers robust overcurrent and short-circuit protection for DC systems, reducing downtime and safeguarding drives and batteries in industrial automation. This translates to fewer unplanned outages and smoother operation in motor control centers and DC distribution blocks. Application: control panels housing DC drives and battery back-ups, where fast, reliable tripping is essential. Feature → Business Impact → Application: Rated current of 50 A with up to 85 kA Ics/Icu in series configurations provides strong fault current withstand capability, enabling safer startups and safe isolation during maintenance. Application: high-energy DC feeders and renewable energy interfacing where protective margin matters. Feature → Business Impact → Application: Ui 1000 V and Ue 500 V DC ratings ensure adequate insulation and compatibility with medium-voltage DC networks, supporting compliance and safe interconnects with other ABB EcoSolutions devices. Application: DC distribution and interface with ABB EcoSolutions ecosystem for lifecycle management. Feature → Business Impact → Application: Front terminals and fixed connection design simplify field installation and panel layout, reducing assembly time and error-prone wiring. Application: compact control panels and retrofits where space is at a premium. Feature → Business Impact → Application: Mechanical durability rated at 25,000 cycles with 240 cycles per hour supports frequent on/off cycling without degraded performance, improving uptime in dynamic process lines. Application: conveyors, material handling, and packaging lines with regular start/stop cycles. Feature → Business Impact → Application: Power loss of 4.09 W per pole minimizes heat generation, contributing to cooler panels and lower cooling requirements. Application: energy-conscious panel design and extended component life. Feature → Business Impact → Application: ABB EcoSolutions alignment, including recyclability at 55.7% per EN45555 and accessible end-of-life disassembly instructions, supports sustainability goals and regulatory compliance. Application: asset retirement and circular economy programs across manufacturing facilities. Feature → Business Impact → Application: Dimensions 90 mm width, 130 mm height, 82.5 mm depth and weight 1.2 kg provide a compact form factor for retrofit projects and new panel builds alike. Application: space-constrained switchgear installations and modular automation architectures.
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FAQs
The 1SDA123546R1 is a 3-pole DC moulded case circuit breaker rated at 50 A, designed for DC power circuits in industrial automation. It supports 500 V DC operation and 1000 V insulation, making it suitable for DC bus protection, drives, battery interfaces, and DC distribution in control panels.
Front-terminal fixed circuit-breaker design simplifies panel wiring, reduces installation time, and minimizes field wiring errors. The compact footprint (90 x 130 x 82.5 mm) and 1.2 kg weight aid in retrofit projects and space-constrained panels, while ensuring robust mechanical and electrical performance in industrial environments.
This device complies with IEC 60947-2 and carries CE conformity with RoHS compliance. ABB also provides environmental declarations such as the EPD for Tmax XT XT2 TM lines, and disassembly instructions for end-of-life handling, supporting regulatory and sustainability requirements.
The breaker offers a mechanical durability of up to 25,000 cycles at a typical rate of 240 cycles per hour, ensuring reliable operation in frequent switching scenarios. TMA release provides robust overload and short-circuit protection, while installation and disassembly instructions simplify preventive maintenance and replacement planning.
With a recyclability rate of 55.7% per EN45555 and clear end-of-life disassembly guidance, the 1SDA123546R1 supports resource-circle objectives. Its low power loss of 4.09 W per pole reduces heat and cooling requirements in panels, contributing to lower operating costs and improved energy efficiency over the service life.