S203M-B63NA

Name: S203M-B63NA
Brand: ABB
SKU: S203M-B63NA

The ABB S203M-B63NA is a current-limiting miniature circuit breaker designed for residential, commercial, and industrial use. It features delayed thermal and electromechanical tripping mechanisms, ensuring reliable protection against overloads and short circuits up to 63A.

Product ModelS203M-B63NA

Material Number2CDS273103R0635

Product ID78643

Stock on Request

Last updated: 8/29/2026

Quantity

Key Features

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1. Current-Limiting TechnologyThe S203M-B63NA features current-limiting technology, which reduces the risk of damage to equipment during short circuits, ensuring a safer operation environment.
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2. Dual Tripping MechanismsEquipped with both delayed thermal and electromechanical tripping mechanisms, this circuit breaker provides comprehensive protection against overloads and short circuits.
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3. Wide Application RangeSuitable for residential, commercial, and industrial applications, making it a versatile solution for various electrical needs.
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4. High Breaking CapacityWith a breaking capacity of up to 10 kA at 230/400 V AC, this circuit breaker can handle high current surges effectively, ensuring reliable operation under demanding conditions.

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

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)