ABB S203M-C25UC: 3-pole MCB for DC and AC, 25 A, high short-circuit breaking capacity, flexible mounting, and compliance with IEC/EN 60898-1 and IEC/EN 60947-2 standards.
Product ModelS203M-C25UC
Material Number2CDS273061R0254
Product ID79830
Stock on Request
Last updated: 8/29/2026
Key Features
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Feature1. High Short-Circuit Breaking Capacity The S203M-C25UC boasts a high inbuilt short-circuit breaking capacity, ensuring reliable protection against electrical overloads and short circuits. It can handle up to 25 kA at 220 V DC and 25 kA at 230 V AC.
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Feature2. Flexible Mounting Options This MCB offers versatile mounting options, including TH35-15 and TH35-7.5 mm mounting rails according to IEC 60715, making it easy to integrate into various electrical distribution systems.
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Feature3. Compliance with International Standards The S203M-C25UC is designed to meet all major international and local standards, including IEC/EN 60898-1 and IEC/EN 60947-2, ensuring it is suitable for a wide range of applications.
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Feature4. Compact and Modular Design The compact and modular design of the S203M-C25UC allows for easy installation in electrical distribution boards, consumer units, and control panels. Its user-friendly ON/OFF switch and clear tripped state indication make operation and troubleshooting straightforward.
Technical Specifications
Detailed engineering parameters based on manufacturer documentation
Specifications may be subject to change without notice
Parameter
Value
Parameter
Value
Standards
IEC/EN 60898-1 IEC/EN 60947-2
Tripping Characteristic
C
Rated Operational Voltage
acc. to IEC 60898-1 400 V AC acc. to IEC 60898-1 440 V DC acc. to IEC 60898-1 440 V acc. to IEC 60898-2 400 V AC acc. to IEC 60947-2 440 V AC acc. to IEC 60947-2 440 V DC
Operational Voltage
Maximum (Incl. Tolerance) 440 V AC Maximum (Incl. Tolerance) 500 V DC Minimum 12 V AC Minimum 12 V DC
Rated Insulation Voltage (Ui)
acc. to IEC/EN 60664-1 440 V
Rated Impulse Withstand Voltage (Uimp)
5
Feature5. Reliable Protection for DC and AC Applications The S203M-C25UC is designed to protect both DC and AC circuits, making it an ideal solution for applications requiring flexible electrical protection. Its performance range and approvals make it a unique and reliable choice for residential, commercial, and industrial use.
4 kV at 2000 m 5 kV at Sea Level 6.2 kV
Dielectric Test Voltage
50/60 Hz-1 min: 2 kV
Input Voltage Type
AC/DC
Rated Current (In)
25 A
Rated Short-Circuit Capacity
(AC) 10 kA (230 V AC) 10 kA (253 V AC) 10 kA (400 V AC) 10 kA (440 V DC) 10 kA (230 V) 10 kA (400 V) 10 kA
