S203M-K3NA

Name: S203M-K3NA
Brand: ABB
SKU: S203M-K3NA

Product Description: ABB S203M-K3NA Miniature Circuit Breaker - 3P - K - 3 A. Current limiting with delayed thermal and electromechanical tripping mechanisms for overload and short circuit protection. Suitable for residential, commercial, and industrial applications.

Product ModelS203M-K3NA

Material Number2CDS273103R0317

Product ID78960

Stock on Request

Last updated: 8/29/2026

Quantity

Key Features

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1. Advanced Protection MechanismsThe S203M-K3NA features two tripping mechanisms: delayed thermal for overload protection and electromechanical for short circuit protection, ensuring comprehensive safety.
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2. Compliance with International StandardsCompliant with IEC/EN 60898-1 and IEC/EN 60947-2, making it suitable for a wide range of applications including residential, commercial, and industrial use.
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3. High Short-Circuit CapacityWith a rated short-circuit capacity of 10 kA at 230/400 V AC, it provides robust protection against electrical surges.
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4. Compact DesignDesigned for space efficiency, the bottom-fitting auxiliary contact can be mounted to save up to 50% space.
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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

CSA 22.2 No. 235 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 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)