S203M-B50

Name: S203M-B50
Brand: ABB
SKU: S203M-B50

The ABB S203M-B50 is a high-performance, 3-pole miniature circuit breaker with a 50A rating, suitable for 230V AC applications. It offers a B curve and a breaking capacity of 10 kA, making it ideal for various electrical installations.

Product ModelS203M-B50

Material Number2CDS273001R0505

Product ID79087

Stock on Request

Last updated: 8/29/2026

Quantity

Key Features

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1. Enhanced Safety FeaturesThe ABB S203M-B50 is designed with two tripping mechanisms: delayed thermal tripping for overload protection and electromechanical tripping for short circuit protection, ensuring reliable and safe operation.
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2. High Breaking CapacityWith a breaking capacity of 10 kA, this MCB can handle high short-circuit currents, making it suitable for a wide range of applications, including residential, commercial, and industrial settings.
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3. Compact DesignThe S203M-B50 features a compact design, allowing for easy installation and space optimization in electrical panels.
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4. Compliance with International StandardsThe product complies with IEC/EN 60898-1 and IEC/EN 60947-2, ensuring it meets the highest standards for miniature circuit breakers.

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 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)