ABB S203-K1: 3-pole, 1A, K curve circuit breaker for reliable protection and compact design, DIN rail mountable, UL 1077 certified.
Product ModelS203-K1
Material Number2CDS253001R0217
Product ID80339
Stock on Request
Last updated: 8/29/2026
Key Features
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1. Compact DesignThe ABB S203-K1 is part of the System pro M compact series, designed for space-efficient installations, making it perfect for modern electrical systems.
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2. Reliable ProtectionWith a current rating of 1A and a K curve, this circuit breaker provides robust protection against overloads and short circuits, ensuring the safety of your electrical system.
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3. DIN Rail MountingEasy to install on DIN rails, the S203-K1 offers a straightforward and efficient mounting solution, reducing installation time and effort.
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4. UL 1077 CertifiedMeets the stringent standards of UL 1077, ensuring compliance with safety regulations and providing peace of mind for your electrical setup.
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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 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
Rated Insulation Voltage (Ui)
acc. to IEC/EN 60664-1 440 V
Rated Impulse Withstand Voltage (Uimp)
4 kV at 2000 m 5 kV at Sea Level 6.2 kV
5. Versatile ApplicationsSuitable for a wide range of applications, from residential to commercial and industrial settings, the S203-K1 is a versatile solution for any electrical protection needs.
