ABB S203-K30 Circuit Breaker, 30A, 3-Pole, 480V

Meet the ABB S203-K30 Circuit Breaker, a trusted, industrial-grade solution engineered for demanding electrical systems. With a 30 A rating, three poles, and 480 V operation, this breaker is purpose-built for three‑phase power distribution, delivering reliable overcurrent protection and clean isolation in fault events. Use the part number S203-K30 to confirm compatibility with your panel, equipment, and application requirements.

• Three-pole design for 3-phase protection ensures all three phases interrupt together, enhancing safety, simplifying fault analysis, and reducing downstream damage.
• 480 V operation aligns with standard industrial power distribution, making it an ideal fit for large manufacturing spaces, machine rooms, and control panels.
• 30 A current rating provides precise protection for feeders and motors in medium-scale industrial circuits, helping prevent nuisance trips while guarding equipment.
• Direct compatibility guidance—verify fit by part number S203-K30 and evaluate your application requirements to ensure a seamless replacement or new installation.
• Industrial-ranging reliability designed to withstand the rigors of continuous operation in control panels, switchgear, and machine automation environments.
• Supportive purchasing experience—if you’re unsure about compatibility, message us and we’ll help confirm the right part for your system.

Ideal use cases

• Replacing worn or failed breakers in service panels and production line controls that operate on three-phase, 480 V power.
• Installing a robust, dedicated protection device in new or upgraded control panels, motor drives, and switchgear assemblies.
• Stocking a reliable spare part for maintenance crews to minimize downtime during planned outages or emergency restoration.

Why this matters—In three-phase networks, a 3-pole breaker like the S203-K30 provides comprehensive protection and simplifies wiring and maintenance, compared with single-pole alternatives that only safeguard one conductor. Its 480 V rating ensures compatibility with industrial power standards, while the 30 A setting protects circuits without sacrificing performance in motors and loads that require steady, controlled current. This ABB device is a practical, durable choice for engineers seeking dependable protection, straightforward compatibility checks, and a solid, long-term replacement option for critical industrial equipment.