S203MT-B6NA

Name: S203MT-B6NA
Brand: ABB
SKU: S203MT-B6NA

The ABB S203MT-B6NA is a miniature circuit breaker designed for traction and railway applications. It provides reliable protection against overloads and short circuits, ensuring safe and efficient operation in various environments.

Product ModelS203MT-B6NA

Material Number2CDS273446R0065

Product ID79007

Stock on Request

Last updated: 8/29/2026

Quantity

Key Features

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1. Reliable ProtectionThe ABB S203MT-B6NA offers robust protection against overloads and short circuits, ensuring the safety of your electrical system.
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2. International Standards ComplianceThis MCB complies with IEC/EN 60898-1 and IEC/EN 60947-2, meeting international standards for electrical safety.
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3. Versatile ApplicationDesigned for traction and railway applications, this MCB can be used in various environments, including vehicles and industrial settings.
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4. High Breaking CapacityWith a breaking capacity of up to 10 kA at 230/400 V AC, the S203MT-B6NA provides reliable performance under demanding conditions.
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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 60898-1 400 V 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)