S203MT-Z25NA

Name: S203MT-Z25NA
Brand: ABB
SKU: S203MT-Z25NA

The ABB S203MT-Z25NA is a 4-pole, 25A, 400V AC miniature circuit breaker designed for reliable protection in various applications. It features a breaking capacity of 10 kA at 230/400V AC and a toggle, thermal magnetic trip mechanism.

Product ModelS203MT-Z25NA

Material Number2CDS273446R0518

Product ID77932

Stock on Request

Last updated: 8/29/2026

Quantity

Key Features

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1. Reliable ProtectionThe ABB S203MT-Z25NA offers robust protection against electrical faults, ensuring the safety of your equipment and personnel.
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2. High Breaking CapacityWith a breaking capacity of 10 kA at 230/400V AC, this circuit breaker can handle high fault currents effectively.
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3. Versatile ConfigurationAvailable in different configurations (1P, 1P+N, 2P, 3P, 3P+N, 4P), the S203MT-Z25NA fits a variety of electrical systems.
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4. Compact DesignMeasuring 17.5 x 69 x 88 mm, this circuit breaker is compact and easy to integrate into your electrical setup.
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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

IEC/EN 60898-1, IEC/EN 60947-2, UL 1077, CSA 22.2 No. 235

Tripping Characteristic

Rated Voltage (Ur)

440 V

Rated Operational Voltage

acc. to IEC 60898-1 440 V acc. to IEC 60947-2 230 V

Operational Voltage

Maximum (Incl. Tolerance) 253 V AC Maximum (Incl. Tolerance) 66 V DC Minimum 12 V AC Minimum 12 V DC

Rated Insulation Voltage (Ui)