ABB S203U-K30 30A 3-Pole 240 V Circuit Breaker

ABB's S203U-K30 30A 3-Pole 240V Circuit Breaker is engineered to protect three-phase electrical systems in commercial and light-industrial environments. Built for reliable performance, this breaker interrupts overloads and short circuits, helping keep motors, pumps, conveyors, and HVAC equipment safe and operations going smoothly.

Designed for three-phase distribution, the 30 A rating provides precise protection for circuits delivering balanced power to equipment. The 240 V voltage rating ensures compatibility with standard three-phase power distribution in many facilities, and the Part Number S203U-K30 guarantees an exact fit within ABB-based panels and enclosures.

• Current rating: 30 A
• Poles: 3
• Voltage rating: 240 V
• Part number: S203U-K30
• Brand: ABB

Why this ABB breaker stands out for professionals:

• Aligned with three-phase systems: The 3-pole configuration ensures all three phases trip together, reducing the risk of imbalanced loads and electrical arc during a fault.
• Industry-grade reliability: Backed by ABB’s reputation for durable power distribution components, designed for consistent performance in demanding environments.
• Clear compatibility: Specifically matches ABB panels and distribution setups that require the S203U-K30 family, simplifying installation and maintenance.

Ideal use cases include motor control circuits on manufacturing lines, three-phase HVAC and pumping systems, and other equipment where balanced three-phase protection is critical. Whether you’re upgrading an existing panel or wiring a new installation, this breaker delivers straightforward, dependable protection for up to 30 amps per branch.

Practical setup tips:

• Confirm panel compatibility with a 3-pole 240V configuration before installation.
• Size conductors to handle 30 A continuous loads and follow local electrical codes for short-circuit and overcurrent protection clearances.
• Label circuits clearly to reflect three-phase protection and the S203U-K30 authorization for future maintenance.

For electrical professionals who value precise, manufacturer-backed protection in three-phase systems, the ABB S203U-K30 30A 3-Pole 240V Circuit Breaker offers targeted protection, reliable performance, and seamless integration within ABB-powered distributions.