ABB 1SDA123539R1 Moulded Case CB - 4P DC 125A (IEC 60947-2)
Part Number: 1SDA123539R1
Quick Summary
ABB 1SDA123539R1 is a DC-rated moulded case circuit breaker for protecting 500 V DC power rails in industrial automation. Engineers often struggle with reliable short-circuit protection and easy maintenance in harsh industrial environments. Certified to IEC 60947-2 and GB/T 14028.2, with CE conformity and RoHS compliance, it supports global operations. Designed as part of ABB EcoSolutions, it supports responsible end-of-life management and resource-efficient deployment. The unit blends rugged mechanical durability with precise tripping characteristics to minimize downtime and simplify spare parts planning. Choosing this model delivers predictable performance, streamlined installation, and a clear path to regulatory compliance across sites.
Product Information
Extended Description
1SDA123539R1 ABB: XT2S160 DC TMA125 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 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
120 mm
Product Net Height
130 mm
Product Net Depth / Length
82.5 mm
Product Net Weight
1.6 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
4P
Power Loss
at Rated Operating Conditions per Pole 11.4 W
Rated Current (In)
125 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 50 kA | (500 V DC) 3 Poles in Series 50 kA
Rated Ultimate Short-Circuit Breaking Capacity (Icu)
(250 V DC) 2 Poles in Series 50 kA | (500 V DC) 3 Poles in Series 50 kA
Rated Uninterrupted Current (Iu)
160 A
Release
TMA
Release Type
TM
Short-Circuit Performance Level
S
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 → The 4-pole fixed circuit-breaker configuration provides robust DC protection for multi-line DC distribution networks. Business Impact → Helps prevent arc faults and collateral damage, reducing unplanned downtime and maintenance costs. Application → Suitable for DC bus protection in control cabinets and motor drive systems, especially where 500 V DC is used. Feature → Rated current of 125 A and 50 kA service/ultimate short-circuit breaking capacity. Business Impact → Enables reliable interruption during faults without compromising safety margins, improving equipment longevity and operator safety. Application → Ideal for high-demand industrial DC sections and power distribution blocks. Feature → Energy-efficient operation with 11.4 W power loss per pole under rated conditions. Business Impact → Lowers heat generation in enclosures, reducing cooling loads and energy consumption. Application → Beneficial in compact switchboards and energy-conscious facilities. Feature → 25000 mechanical durability cycles (up to 240 cycles/hour). Business Impact → Extends service intervals and lowers replacement costs in high-stop-start environments. Application → Critical for manufacturing lines with frequent cycling and automated processes. Feature → ABB EcoSolutions and disassembly instructions support end-of-life planning and recycling. Business Impact → Improves sustainability metrics and compliance with EN45555 resource-loop standards. Application → Useful for projects pursuing green certifications and long-term total cost of ownership optimization. Feature → IEC 60947-2 and GB/T 14028.2 compliance with CE and RoHS declarations. Business Impact → Smooths regulatory approvals and worldwide procurement, reducing complexity in global rollouts. Application → Essential for multinational automation projects, panel builders, and data center DC distribution.
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FAQs
The ABB 1SDA123539R1 complies with IEC 60947-2 and GB/T 14028.2, making it suitable for standard panel builder installations. It is a fixed 4-pole DC MCCB designed for 500 V DC systems with a 125 A rating, enabling straightforward integration into control cabinets and DC distribution blocks. Its compact dimensions (120 mm width, 130 mm height, 82.5 mm depth) and 1.6 kg weight support easy mounting and handling during assembly and commissioning.
Key specs include Rated Service Short-Circuit Breaking Capacity (Ics) and Rated Ultimate Short-Circuit Breaking Capacity (Icu) of 50 kA, at both 250 V DC (2 poles in series) and 500 V DC (3 poles in series). It also features a Rated Impulse Withstand Voltage (Uimp) of 8 kV and a Rated Insulation Voltage (Ui) of 1000 V, ensuring strong protection against surges and overvoltages in DC power networks.
Yes. The device is DC-rated for use in industrial automation DC distribution networks, with high durability (up to 25,000 mechanical cycles) and robust construction. Its 4P fixed terminal design supports secure, space-efficient mounting in control cabinets, while its 500 V DC operational voltage makes it suitable for demanding DC power rails typically found in manufacturing and energy-intensive facilities.
The MCCB carries CE conformity, RoHS compliance, and an EPD (Environmental Product Declaration) for Tmax XT2 TM. ABB EcoSolutions pages provide disassembly instructions to facilitate end-of-life handling. Recyclability is designed into the product with EN45555-aligned resource-loop considerations, supporting green-building and sustainability initiatives across industries.
With 25,000 mechanical cycles and low per-pole power loss of 11.4 W, the unit minimizes nuisance trips and reduces cooling energy in enclosures, lowering operating costs. Its durable design, standardized IEC/GB ratings, and easy installation translate to lower spare-part inventory, shorter downtime during maintenance, and a clear return-on-investment for projects requiring reliable DC protection.