ABB 1SDA123621R1 - Moulded Case CB, IEC 60947-2 XT5
Part Number: 1SDA123621R1
Quick Summary
The ABB 1SDA123621R1 Moulded Case CB delivers reliable DC protection for industrial power distribution and control panels. The compact 4P design reduces panel width while maintaining high fault-clearing capability, helping engineers save space and simplify wiring in DC systems. By addressing common pain points such as fault-current management, installation time, and lifecycle costs, this device provides a predictable trip characteristic and long-term protection. It carries essential certifications and declarations, including IEC 60947-2 compliance and CE conformity, plus RoHS/REACH declarations and an Environmental Product Declaration (EPD). With ABB EcoSolutions support and end-of-life guidance, it supports sustainable procurement and waste reduction while delivering robust protection for critical DC applications. This combination of safety, efficiency, and compliance supports modern DC distribution strategies and panel-builder productivity.
Product Information
Extended Description
1SDA123621R1 ABB: XT5L 400 DC TMA320 FF 4P
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 XT5 TM
Environmental Product Declaration - EPD
EPD Tmax XT XT5 TM (CN)
Recyclability Rate of the Product acc. to EN45555
Design for Closing Resource Loops - Standard EN45555 - 59.6 %
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
Environmental Information
Breakers - Packaging disposal information
Customs Tariff Number
85362000
Product Net Width
186 mm
Product Net Height
205 mm
Product Net Depth / Length
103 mm
Product Net Weight
4.15 kg
Product Name
Moulded Case Circuit Breaker
Product Type
CB
Version
F
Current Type
DC
Mechanical Durability
20000 cycle | ;120 cycles per hour
Number of Poles
4P
Power Loss
at Rated Operating Conditions per Pole 16.9 W
Rated Current (In)
320 A
Rated Impulse Withstand Voltage (Uimp)
8 kV
Rated Insulation Voltage (Ui)
1000 V
Rated Operational Voltage
750 V DC
Rated Service Short-Circuit Breaking Capacity (Ics)
(250 V DC) 2 Poles in Series 85 kA | (500 V DC) 2 Poles in Series 85 kA | (750 V DC) 3 Poles in Series 50 kA
Rated Ultimate Short-Circuit Breaking Capacity (Icu)
(250 V DC) 2 Poles in Series 85 kA | (500 V DC) 2 Poles in Series 85 kA | (750 V DC) 3 Poles in Series 50 kA
Rated Uninterrupted Current (Iu)
400 A
Release
TMA
Release Type
TM
Short-Circuit Performance Level
L
Standards
IEC 60947-2 | GB/T 14028.2
Sub-type
XT5
Terminal Connection Type
Fixed Circuit-Breakers
Declaration of Conformity - CE
EC Declaration of Conformity Tmax XT5
Instructions and Manuals
Installation instructions XT5 DC IEC
WEEE Category
5. Small Equipment (No External Dimension More Than 50 cm)
Compact, 4P XT5 design reduces panel footprint and wiring complexity, enabling faster installation and higher pack density in DC distribution panels. This translates to tangible labor cost savings and more efficient control cabinets for battery storage and process automation. The 320 A rated current and 750 V DC rated operational voltage deliver reliable protection across demanding DC networks, supporting scalable power distribution and safer equipment protection in industrial settings. With a per-pole power loss of 16.9 W, you gain measurable energy efficiency benefits, reducing heat rise and cooling requirements in confined enclosures. The device’s robust short-circuit performance (Ics/Icu values around 50–85 kA depending on configuration) minimizes conduit damage and downtime during faults, boosting plant availability and maintenance ROI. The fixed-terminal, 4P configuration simplifies installation and serviceability, while the included disassembly and end-of-life guidance streamline recycling and waste management. RoHS and REACH compliance, together with the EPD and recyclability rate (59.6%), support compliant procurement and sustainable sourcing, aligning with corporate ESG targets. The ABS EcoSolutions framework and documented conformity (CE) help ensure ongoing regulatory compliance, while the TMA/TM release features enable precise control and fast tripping in DC protection schemes. Industry-specific contexts such as UPS integration, DC bus protection, and controlled battery charging environments benefit from the XT5 class’s reliability, installation advantages, and lifecycle support.
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FAQs
Yes. The 1SDA123621R1 is a fixed-terminal 4P XT5 Moulded Case Circuit Breaker designed for DC applications up to 750 VDC and 320 A. It integrates with standard XT5 modular systems and ABB EcoSolutions platforms, ensuring straightforward replacement in existing XT5-based panels and compatible control cabinets. When upgrading, verify enclosure clearance, mounting pitch, and terminal busbar compatibility to avoid wiring rework.
Key specs include rated current In = 320 A, rated operational voltage Uo = 750 V DC, rated insulation voltage Ui = 1000 V, and rated impulse withstand voltage Uimp = 8 kV. Short-circuit performance is defined as Ics/Icu in series configurations (up to 85 kA for certain voltages). The device provides 4P fixed connections, a power loss of 16.9 W per pole, and a DC release (TMA/TM) for fast and reliable tripping.
Absolutely. The 1SDA123621R1 is designed for DC distribution and protection in energy storage systems, process control, and DC bus applications. Its XT5 family gives predictable tripping behavior, while the 4P configuration and 750 VDC rating support reliable protection in battery charging/discharging circuits, DC link protection, and high-density panel assemblies.
The device complies with IEC 60947-2 and GB/T 14028.2, carries CE conformity (EC Declaration of Conformity Tmax XT5), and supports RoHS/REACH declarations. Environmental considerations include an EPD for Tmax XT XT5 TM and a 59.6% recyclability rate per EN45555, along with packaging disposal information.
Mechanical durability is rated at around 20,000 cycles, with predictable wear and stable electrical performance under normal operation. The 4P fixed design simplifies maintenance checks and part replacements, reducing downtime. Combined with low per-pole losses and robust protection, the total cost of ownership improves through lower energy waste, easier serviceability, and longer service life for DC protection in demanding installations.