ABB S203M-D50: 3P, 50A miniature circuit breaker with delayed thermal and electromechanical tripping mechanisms for enhanced overload and short-circuit protection.
Product ModelS203M-D50
Material Number2CDS273001R0501
Product ID79073
Stock on Request
Last updated: 8/29/2026
Key Features
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1. Dual Tripping MechanismsThe S203M-D50 features two tripping mechanisms: delayed thermal tripping for overload protection and electromechanical tripping for short-circuit protection, ensuring comprehensive safety and reliability.
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2. High Breaking CapacityWith a breaking capacity of up to 10 kA at 230/400 V AC, this circuit breaker provides robust protection against high current surges, making it suitable for a wide range of industrial and commercial applications.
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3. Compact DesignThe S203M-D50 is designed to be compact and space-efficient, fitting seamlessly into various electrical panels and distribution boards. Its slim profile makes it ideal for installations where space optimization is crucial.
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4. Advanced Safety FeaturesEquipped with a contact position indicator (CPI), the S203M-D50 allows for easy identification of the circuit breaker's status, ensuring safe and efficient maintenance. Additionally, it features an earth fault indicator for quick detection of earth faults.
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
D
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)
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5. Comprehensive ApprovalsThe S203M-D50 complies with IEC/EN 60898-1 and IEC/EN 60947-2 standards, ensuring it meets the highest safety and performance requirements. This makes it a reliable choice for a variety of applications, including residential, commercial, and industrial settings.
