ABB S203M-K32NA: Compact, 4-pole MCB with 32 A rated current, K-tripping, and IEC compliance. Ideal for residential, commercial, and industrial use.
Product ModelS203M-K32NA
Material Number2CDS273103R0537
Product ID78863
Stock on Request
Last updated: 8/29/2026
Key Features
1
Feature1. Reliable Protection The ABB S203M-K32NA offers robust protection against overloads and short circuits with its delayed thermal and electromechanical tripping mechanisms, ensuring the safety of your electrical system.
2
Feature2. Compact Design With its compact dimensions, this MCB fits perfectly into your DIN rail installation, saving space and enhancing the overall efficiency of your electrical setup.
3
Feature3. High Breaking Capacity Designed to handle high currents, the S203M-K32NA has a breaking capacity of up to 10 kA at 230/400 V AC, making it suitable for a wide range of applications.
4
Feature4. Easy Installation Featuring screw terminals and a straightforward mounting process, the S203M-K32NA ensures quick and hassle-free installation, minimizing downtime and enhancing productivity.
Technical Specifications
Detailed engineering parameters based on manufacturer documentation
Specifications may be subject to change without notice
Parameter
Value
Parameter
Value
Standards
CSA 22.2 No. 235 IEC/EN 60947-2 UL 1077
Tripping Characteristic
K
Rated Operational Voltage
acc. to IEC 60898-1 400 V AC acc. to IEC 60898-1 400 V acc. to IEC 60947-2 440 V AC
Operational Voltage
Maximum (Incl. Tolerance) 440 V AC 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. Compliance and Certifications Meets IEC/EN 60898-1 and IEC/EN 60947-2 standards, ensuring compliance with international safety regulations. Additionally, it is certified for use in UL/CSA environments, providing peace of mind for your electrical installations.
6
Feature6. Energy Efficiency With a power loss of 14.4 W at rated operating conditions per pole, the S203M-K32NA is designed to minimize energy consumption while maintaining high performance, making it an eco-friendly choice for your electrical needs.
7
Feature7. Durability and Reliability Built to withstand harsh environmental conditions, the S203M-K32NA is resistant to shock and vibrations, ensuring it remains reliable and functional even in demanding settings. Its IP20 enclosure provides protection against dust and water ingress, further enhancing its durability.
8
Feature8. Space-Saving Features The bottom-fitting auxiliary contact allows for the mounting of additional contacts, saving up to 50% of space in your electrical panel. This feature is particularly useful in applications where space is limited, such as in residential or commercial settings.
9
Feature9. User-Friendly Indication The red ON/green OFF contact position indication provides clear visual feedback, making it easy to monitor the status of the circuit breaker. This feature enhances user safety and convenience by ensuring that the status of the breaker is always easily identifiable.
10
Feature10. Wide Operating Range The S203M-K32NA operates within a wide temperature range of -25°C to +55°C, making it suitable for various environmental conditions. Its ability to function effectively in both hot and cold temperatures ensures reliable performance in diverse applications.
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
Rated Current (In)
32 A
Rated Short-Circuit Capacity
(AC) 10 kA (DC) 10 kA (230 V AC) 10 kA (400 V AC) 10 kA (400 V) 10 kA
