S203M-Z4NA

Name: S203M-Z4NA
Brand: ABB
SKU: S203M-Z4NA

The ABB S203M-Z4NA is a compact, current-limiting miniature circuit breaker designed for reliable overload and short circuit protection. It features two tripping mechanisms and is suitable for residential, commercial, and industrial applications, ensuring safe and efficient electrical system operation.

Product ModelS203M-Z4NA

Material Number2CDS273103R0338

Product ID110574

Stock on Request

Last updated: 8/29/2026

Quantity

Key Features

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1. Reliable ProtectionThe S203M-Z4NA offers both delayed thermal and electromechanical tripping mechanisms, providing comprehensive protection against overloads and short circuits.
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2. Versatile ApplicationsSuitable for residential, commercial, and industrial applications, this MCB can be used in a variety of settings to ensure safe electrical operation.
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3. Compact DesignWith a bottom-fitting auxiliary contact, the S203M-Z4NA saves 50% space, making it ideal for installations where space is limited.
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4. High Breaking CapacityCapable of breaking currents up to 10 kA at 230/400 V AC, this MCB ensures it can handle high electrical demands with ease.
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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)