S203-B3NA

Name: S203-B3NA
Brand: ABB
SKU: S203-B3NA

The ABB S203-B3NA is a high-capacity, three-pole miniature circuit breaker designed for reliable protection of electrical circuits against overloads and short circuits. It features robust construction and advanced safety features, making it ideal for demanding applications.

Product ModelS203-B3NA

Material Number2CDS253103R0035

Product ID78742

Stock on Request

Last updated: 8/29/2026

Quantity

Key Features

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1. Reliable ProtectionThe ABB S203-B3NA offers reliable protection against overloads and short circuits, ensuring the safety of your electrical systems.
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2. High CapacityWith a rating of 100A, this circuit breaker is suitable for a wide range of applications, from residential to industrial settings.
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3. Robust ConstructionBuilt with a robust design, the S203-B3NA ensures long-lasting performance and durability in harsh environments.
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4. Advanced Safety FeaturesEquipped with advanced safety features, this circuit breaker provides enhanced electrical safety and reduces the risk of electrical accidents.
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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 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

Rated Insulation Voltage (Ui)

acc. to IEC/EN 60664-1 440 V

Rated Impulse Withstand Voltage (Uimp)

4 kV at 2000 m 5 kV at Sea Level 6.2 kV