S203M-Z20NA

Name: S203M-Z20NA
Brand: ABB
SKU: S203M-Z20NA

The ABB S203M-Z20NA is a 20A miniature circuit breaker with delayed thermal and electromechanical tripping mechanisms. Ideal for residential, commercial, and industrial use, it ensures reliable protection and efficient operation.

Product ModelS203M-Z20NA

Material Number2CDS273103R0488

Product ID81034

Stock on Request

Last updated: 8/29/2026

Quantity

Key Features

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1. Reliable Protection MechanismsThe S203M-Z20NA features two tripping mechanisms: delayed thermal for overload protection and electromechanical for short circuit protection, ensuring comprehensive safety.
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2. Versatile ApplicationCompatible with residential, commercial, and industrial applications, making it a versatile choice for various settings.
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3. High Breaking CapacityWith a breaking capacity of up to 10 kA at 230/400 V AC, it can handle high short-circuit currents effectively.
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4. Compliance with International StandardsCompliant with IEC/EN 60898-1 and IEC/EN 60947-2, ensuring it meets international safety standards.
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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

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)