ABB S204M-C20UC: A compact, high-performance MCB for DC and AC applications, offering 20A rated current, 10kA short-circuit breaking capacity, and easy DIN rail mounting.
Product ModelS204M-C20UC
Material Number2CDS274061R0204
Product ID80407
Stock on Request
Last updated: 8/29/2026
Key Features
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Feature1. High Short-Circuit Breaking Capacity The S204M-C20UC boasts a high inbuilt short-circuit breaking capacity, ensuring reliable protection against electrical faults. It can handle up to 10kA at 400V AC and 440V DC, making it suitable for a wide range of applications.
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Feature2. Flexible DC and AC Applications Designed to operate seamlessly in both DC and AC environments, this MCB provides flexibility in various electrical systems. Its performance range and approvals make it a valuable addition to any installation.
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Feature3. Compliance with Major Standards The S204M-C20UC meets all major international and local standards, including IEC/EN 60898-1 and IEC/EN 60947-2. This ensures that the product is compliant with regulatory requirements, providing peace of mind for users.
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Feature4. Easy Mounting Options The MCB features screw terminals that can be easily mounted on DIN rails using TH35-15 or TH35-7.5 mounting rails. This makes installation quick and efficient, saving time and effort in the field.
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. Durable and Reliable Construction Built with high-quality materials, the S204M-C20UC offers excellent electrical endurance with 20,000 AC cycles and mechanical endurance with 20,000 cycles. It also features a failsafe bi-directional cylinder-lift terminal for added reliability.
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)
20 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
