S203M-B50NA

Name: S203M-B50NA
Brand: ABB
SKU: S203M-B50NA

The ABB S203M-B50NA is a 230V 3-pole 50A miniature circuit breaker (MCB) that provides reliable protection in various applications. It is designed for both DC and AC applications, ensuring high performance and excellent technical data.

Product ModelS203M-B50NA

Material Number2CDS273103R0505

Product ID77710

Stock on Request

Last updated: 8/29/2026

Quantity

Key Features

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1. Reliable ProtectionThe ABB S203M-B50NA offers robust protection against overcurrents and earth fault currents, ensuring the safety of your electrical system.
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2. Versatile ApplicationSuitable for both DC and AC applications, this MCB is ideal for a wide range of electrical installations, from residential to industrial use.
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3. High PerformanceWith its excellent technical data and high breaking capacity, the S203M-B50NA ensures reliable operation under various conditions.
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4. Comprehensive ApprovalsThe MCB complies with IEC/EN 60947-2 and other relevant standards, providing assurance of its quality and performance.
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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 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)