ABB S203-D20 20A 3-Pole 480 V Circuit Breaker Potential Transformer

The ABB S203-D20 is a dependable 20 A, 3-pole circuit breaker designed for 480 V three-phase electrical systems. Built for industrial environments, this unit provides reliable protection for feeders, motors, and distribution panels, helping prevent costly downtime and equipment damage when faults occur.

Why choose the ABB S203-D20 for your electrical infrastructure?

• Three-pole protection for 480 V systems: Specifically engineered to safeguard three-phase circuits, ensuring balanced protection across all phases in industrial installations.
• Compact, compatible design: Part number S203-D20 aligns with ABB’s trusted line of breakers, making it easy to find compatible accessories and replacement parts for seamless panel integration.
• Clear specification alignment: 20 A current rating provides the right level of protection for moderate feeders and motor circuits in manufacturing, processing lines, and commercial-grade equipment.
• Industry-ready reliability: ABB’s engineering heritage translates to consistent performance, predictable trip behavior, and long service life in demanding environments.
• Simple maintenance and replacement: With a standardized form factor and rating, you can confidently upgrade or replace breakers in existing ABB installations without compatibility concerns.

Key specifications

• 20 A
• Poles: 3
• Voltage rating: 480 V
• Part number: S203-D20
• Brand: ABB
• Application: Protects three-phase distribution to motors, drives, and feeders in industrial and commercial electrical installations

Ideal use scenarios

• Industrial panels and switchgear feeding 480 V three-phase equipment
• Motor control centers and automation racks where reliable phase protection is essential
• Electrical distribution boards in manufacturing lines, processing plants, and large facility installations
• Upgrade or spare-part replacement for existing ABB S203-D20 installations to maintain consistency and compatibility

Practical tips for deployment

• Verify panel compatibility: Ensure the breaker footprint and trip characteristics align with your current ABB installation or panel schedule.
• Plan for safe replacement: De-energize the circuit and follow proper lockout/tagout procedures before installing or swapping breakers.
• Coordinate with protection strategy: Use the S203-D20 as part of a balanced three-phase protection scheme to minimize nuisance trips and maintain steady operation of connected equipment.
• Consult documentation for accessories: If you need auxiliary contacts or mounting accessories, choose ABB-compatible options designed for the S203-D20 family.

In short, the ABB S203-D20 20A 3-Pole 480 V Circuit Breaker is a purpose-built component that delivers reliable three-phase protection for industrial power systems. Its 20 A rating, three-pole configuration, and ABB reliability make it a practical, straightforward choice for safeguarding your critical equipment and keeping operations on track.