ABB S203UP-K15 15A 3-Pole 277 V Circuit Breaker

ABB S203UP-K15 15A 3-Pole 277 V Circuit Breaker

Meet the ABB S203UP-K15, a purpose-built 15-amp, 3-pole circuit breaker engineered for reliable protection of three-phase, 277 V electrical systems. With the part number S203UP-K15, this breaker is designed to integrate seamlessly into compatible ABB panels and distribution setups, delivering dependable overcurrent protection where three-phase power is essential.

Why this 3-Pole 277 V breaker stands out

• Coordinated three-pole protection: trip across all three phases simultaneously to isolate faults and prevent unbalanced faults from damaging equipment.
• Targeted for 277 V systems: ideal for commercial and industrial environments that use 277 V single- or three-phase distribution, safeguarding lighting, motors, and auxiliary equipment.
• Compact, reliable ABB design: built to endure routine electrical loads in demanding applications while maintaining predictable performance over time.

Key specifications

• Current rating: 15 A
• Poles: 3
• Voltage rating: 277 V
• Part number: S203UP-K15

Ideal applications and use cases

• Commercial lighting and small motors in 277 V distribution networks.
• Three-phase circuits in office buildings, retail spaces, or data centers that run on 277 V systems.
• Replacement or upgrade in ABB-compatible panels where a 3-pole, 15A protection device is required for coordinated shutdowns.

What problems it solves

By interrupting current on all three phases at once, the S203UP-K15 minimizes the risk of phase imbalances and equipment damage during faults. This translates to safer operation, reduced downtime, and easier fault troubleshooting for facility managers and technicians working with commercial electrical infrastructure.

Installation and compatibility tips

• Use in panels and enclosures that support 3-pole 277 V protection devices and accept the S203UP-K15 form factor.
• Verify system voltage and circuit load to ensure the 15 A rating matches application requirements.
• Follow local electrical codes and safety practices during installation and maintenance.

With the ABB S203UP-K15 15A 3-Pole 277 V Circuit Breaker, you get targeted overload protection tailored for 277 V three-phase environments, backed by ABB’s reputation for durability and consistent performance in professional electrical distribution. Part number S203UP-K15 makes ordering straightforward for replacements and upgrades in compatible ABB systems.