S203-B25

Name: S203-B25
Brand: ABB
SKU: S203-B25

The ABB S203-B25 is a 3-pole, 25A miniature circuit breaker designed for DIN rail mounting. It offers reliable overload and short circuit protection with its delayed thermal and electromechanical tripping mechanisms, making it perfect for various industrial applications.

Product ModelS203-B25

Material Number2CDS253001R0255

Product ID77579

Stock on Request

Last updated: 8/29/2026

Quantity

Key Features

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1. Reliable ProtectionThe S203-B25 features two tripping mechanisms – delayed thermal for overload protection and electromechanical for short circuit protection, ensuring comprehensive safety in your electrical system.
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2. Compact DesignThis miniature circuit breaker is part of the System pro M compact series, making it ideal for space-constrained applications. Its compact design allows for easy installation on DIN rails.
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3. High Current RatingWith a current rating of 25A, the S203-B25 can handle a wide range of electrical loads, making it suitable for various industrial and commercial settings.
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4. Durable ConstructionBuilt to last, the S203-B25 operates within a temperature range of -25°C to 55°C, ensuring reliable performance in diverse environmental conditions.

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 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)