"ABB S203MT-B1NA: A miniature circuit breaker designed for traction applications, featuring current limiting and thermal tripping mechanisms, compliant with IEC/EN standards."
Product ModelS203MT-B1NA
Material Number2CDS273446R0015
Product ID78618
Stock on Request
Last updated: 8/29/2026
Key Features
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1. Compliance with IEC/EN Standards\"Compliant with IEC/EN 60898-1 and IEC/EN 60947-2, ensuring high reliability and safety in traction applications.\"
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2. Robust Design for Traction\"Designed specifically for traction and railway applications, providing robust protection against electrical surges and overloads.\"
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3. Current Limiting Mechanism\"Equipped with a current limiting mechanism to prevent damage from short circuits, ensuring continuous operation in harsh environments.\"
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4. Thermal Tripping Mechanism\"Features a delayed thermal tripping mechanism for overload protection, ensuring the breaker trips only when necessary, reducing false tripping.\"
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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
B
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)
5. Versatile Configuration\"Available in various configurations (1P, 2P, 3P, 4P) and tripping characteristics (C, D, K, Z), making it adaptable to diverse traction systems.\"
