S203-Z25NA

Name: S203-Z25NA
Brand: ABB
SKU: S203-Z25NA

The ABB S203-Z25NA is a 25A, 3-pole miniature circuit breaker (MCB) with a Z rating, designed for reliable overload and short-circuit protection. It is ideal for residential, commercial, and industrial applications, ensuring safety and efficiency in your electrical system.

Product ModelS203-Z25NA

Material Number2CDS253103R0518

Product ID75820

Stock on Request

Last updated: 8/29/2026

Quantity

Key Features

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1. Reliable ProtectionThe S203-Z25NA offers both delayed thermal tripping for overload protection and electromechanical tripping for short-circuit protection, ensuring your electrical system is safeguarded against potential hazards.
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2. Versatile ApplicationSuitable for a wide range of applications including residential, commercial, and industrial settings, making it a versatile choice for various electrical needs.
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3. High Breaking CapacityWith a breaking capacity of up to 6 kA at 230/400 V AC, this MCB can handle high current surges effectively, providing reliable service under demanding conditions.
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4. Compliance with StandardsMeets IEC/EN 60898-1, IEC/EN 60947-2, and UL1077 standards, ensuring compliance with international safety regulations.

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