S203M-K40NA

Name: S203M-K40NA
Brand: ABB
SKU: S203M-K40NA

The ABB S203M-K40NA is a 3P miniature circuit breaker designed for high reliability and efficiency. With a rated current of 40 A, it features failsafe bi-directional cylinder-lift terminals and high interrupting ratings. Ideal for residential, commercial, and industrial applications, this compact MCB ensures safe and efficient electrical distribution.

Product ModelS203M-K40NA

Material Number2CDS273103R0557

Product ID78852

Stock on Request

Last updated: 8/29/2026

Quantity

Key Features

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1. High Interrupting RatingsThe S203M-K40NA boasts interrupting ratings of 6 kA (DC) and 10 kA, ensuring reliable protection against short circuits and overloads.
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2. Flexible ApplicationSuitable for both DC and AC applications, this MCB is versatile and adaptable to various electrical systems.
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3. Compact DesignWith a compact design, the S203M-K40NA can be easily mounted on DIN rails, saving space in your electrical panel.
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4. Enhanced Safety FeaturesEquipped with failsafe bi-directional cylinder-lift terminals, this MCB provides secure connections and ensures safety in electrical distribution.
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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)