S203-K4

Name: S203-K4
Brand: ABB
SKU: S203-K4

The ABB S203-K4 is a miniature circuit breaker with current limiting capabilities, featuring delayed thermal and magnetic tripping mechanisms for reliable overload and short circuit protection.

Product ModelS203-K4

Material Number2CDS253001R0337

Product ID80948

Stock on Request

Last updated: 8/29/2026

Quantity

Key Features

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1. Reliable Protection MechanismsThe ABB S203-K4 is equipped with two distinct tripping mechanisms: delayed thermal tripping for overload protection and magnetic tripping for short circuit protection, ensuring comprehensive safety in electrical systems.
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2. Current LimitingDesigned to limit current during faults, the S203-K4 helps prevent damage to equipment and reduces the risk of electrical fires, making it an essential component in any electrical installation.
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3. Compact DesignThe miniature design of the S203-K4 makes it perfect for applications where space is limited, such as in industrial control panels or residential electrical systems.
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4. High PerformanceWith a rating of 4A and a breaking capacity of 6kA, the S203-K4 provides robust performance in a compact package, ensuring reliable operation under various load conditions.

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

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