"ABB S203MT-Z63NA: 63A, 4P, Z characteristic miniature circuit breaker for traction and railway applications. Compliant with IEC/EN 60898-1 and IEC/EN 60947-2 standards."
Product ModelS203MT-Z63NA
Material Number2CDS273446R0608
Product ID79600
Stock on Request
Last updated: 8/29/2026
Key Features
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1. High Current RatingThe ABB S203MT-Z63NA supports a high current rating of 63A, making it suitable for demanding applications in the traction and railway industries.
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2. Compliance with International StandardsThis miniature circuit breaker complies with IEC/EN 60898-1 and IEC/EN 60947-2 standards, ensuring reliability and safety in your electrical systems.
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3. Versatile Tripping MechanismThe Z tripping characteristic provides both delayed thermal tripping for overload protection and electromechanical tripping for short circuit protection, offering comprehensive protection.
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4. Durable DesignConstructed with insulation group I, RAL 7035 housing material, this circuit breaker is designed to withstand harsh environmental conditions, including temperatures ranging from -25°C to +55°C.
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
Z
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)
5
5. Easy InstallationThe S203MT-Z63NA features screw terminals and can be mounted on DIN rail TH35-7.5 or TH35-15, making installation straightforward and efficient.
