Short Description: ABB S203M-B10NA - 3P, 10A, Type B miniature circuit breaker for DIN rail mounting, 10 kA breaking capacity, and operating temperature range of -25°C to +55°C.
Product ModelS203M-B10NA
Material Number2CDS273103R0105
Product ID69179
Stock on Request
Last updated: 8/29/2026
Key Features
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1. Reliable ProtectionThe ABB S203M-B10NA offers reliable protection against overloads and short circuits with its delayed thermal and electromechanical tripping mechanisms.
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2. Durable DesignBuilt to last with an electrical life of 20,000 cycles, ensuring consistent performance over time.
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3. Versatile ApplicationSuitable for residential, commercial, and industrial applications, making it a versatile choice for various electrical needs.
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4. Easy InstallationDesigned for DIN rail mounting, making installation quick and straightforward.
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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
B
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)
5. High Breaking Capacity
Features a breaking capacity of 10 kA, providing robust protection against high current surges.
4 kV at 2000 m 5 kV at Sea Level 6.2 kV
Dielectric Test Voltage
50/60 Hz-1 min: 2 kV
Input Voltage Type
AC
Rated Current (In)
10 A
Rated Short-Circuit Capacity
(AC) 10 kA (230 V AC) 10 kA (400 V AC) 10 kA (400 V) 10 kA
