S203M-B20NA

Name: S203M-B20NA
Brand: ABB
SKU: S203M-B20NA

The ABB S203M-B20NA miniature circuit breaker features a failsafe bi-directional cylinder-lift terminal and high interrupting ratings, making it suitable for diverse applications. It ensures reliable protection and safety.

Product ModelS203M-B20NA

Material Number2CDS273103R0205

Product ID80658

Stock on Request

Last updated: 8/29/2026

Quantity

Key Features

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1. Reliable ProtectionThe ABB S203M-B20NA provides robust protection against electrical faults with its high interrupting ratings of 6 kA (DC) and 10 kA.
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2. Failsafe DesignEquipped with a failsafe bi-directional cylinder-lift terminal, this circuit breaker ensures safe and secure connections, preventing misconnections.
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3. Versatile ApplicationSuitable for a wide range of applications, from residential to industrial use, the S203M-B20NA offers flexibility and adaptability.
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4. Efficient OperationDesigned for efficient operation, this miniature circuit breaker minimizes downtime and ensures continuous power supply.
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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

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)