ABB S203-C20 20A 3-Pole 480 V Circuit Breaker Potential Transformer

Introducing the ABB S203-C20, a purpose-built 3-pole circuit breaker engineered for reliable protection in demanding 480 V three-phase power systems. With a focused 20 A current rating, this unit delivers precise, consistent protection for motors, drives, and control panels in industrial environments.

Why this breaker stands out

• Exact 20 A protection ensures nuisance trips are minimized while safeguarding wiring and equipment from overloads.
• 3-pole design provides synchronized protection across all phases, maintaining balanced current and preventing phase-related faults.
• 480 V rating aligns with typical industrial power distribution, making it a ready-made fit for commercial and manufacturing applications.
• ABB reliability reflects a long-standing track record in industrial electrical protection, delivering consistent performance and predictable trip behavior.
• Easy integration with compatible ABB panels and installations, offering a straightforward replacement in existing systems that specify the S203-C20 part number.

Ideal applications

• Three-phase motor circuits and drives in manufacturing facilities
• Distribution panels and switchgear where 480 V three-phase protection is required
• Control cabinets for process automation and machinery with stringent protection needs
• Retrofits or replacements in ABB-compatible electrical assemblies to extend panel life and improve reliability

Technical snapshot

• Part Number: S203-C20
• Current rating: 20 A
• Poles: 3
• Voltage rating: 480 V

When you choose the ABB S203-C20, you’re selecting a trusted, industrial-grade protection solution designed to keep power systems running smoothly. Its precise current handling, multi-pole coordination, and compatibility with ABB’s protection ecosystem help minimize downtime and protect critical equipment. Ideal for facilities that demand dependable three-phase reliability, this breaker is a pragmatic choice for engineers and technicians seeking durability, predictable performance, and straightforward maintenance.