ABB S203-K13 13A 3-Pole 277 V Circuit Breaker

Meet the ABB S203-K13 13A 3-Pole 277 V Circuit Breaker — a precise, durable protector designed for three‑phase power distribution. Built to fit ABB-compatible panels, this breaker helps safeguard electrical systems by quickly interrupting current during overloads or faults, reducing the risk of damage and downtime.

Key specifications at a glance

• Nominal current: 13 amperes
• Poles: 3 (three-pole design for synchronized phase protection)
• Voltage rating: 277 volts
• Part number: S203-K13

Why this 3‑pole, 277 V breaker is a smart choice

Three-pole protection ensures all three phases are disconnected simultaneously, which enhances safety and fault isolation in commercial and industrial setups. The 277 V rating makes it well-suited for lighting and equipment on 277/480 V systems commonly found in offices, schools, retail spaces, and other facilities that rely on reliable three‑phase power.

Ideal applications

• Commercial lighting and lighting control circuits on 277 V systems
• Three‑phase equipment such as HVAC controllers, motors, pumps, and conveyors
• Electrical rooms and distribution boards in mid-size facilities that use ABB panels

Distinctive value and practical benefits

• Coordinated protection across all three phases minimizes arcing and unintended power interruptions
• Durable ABB design offers dependable performance in demanding environments
• Part of the S203 family, enabling easier planning and replacement within compatible installations
• Clear, unambiguous rating (13 A, 3 poles, 277 V) helps technicians select the right protective device quickly

Installation and compatibility notes

Designed for ABB-compatible panels and distribution boards, this breaker should be verified for panel compatibility and proper mounting in your specific electrical system. For best results, consult documentation for your ABB paneling and engage a qualified electrician to ensure correct installation and adherence to local electrical codes.

Whether you’re upgrading an existing three‑phase setup or stocking replacement parts for ongoing maintenance, the ABB S203-K13 delivers dependable protection where it matters most—keeping critical loads safe and power flowing smoothly in commercial environments.