ABB S203-K1.6 1.6A 3-Pole 480 V Circuit Breaker

The ABB S203-K1.6 1.6A 3-Pole 480 V Circuit Breaker delivers precise, reliable protection for three‑phase electrical systems. Designed by ABB, a name synonymous with durability and engineering rigor, this breaker guards your valuable equipment by interrupting fault currents and preventing damage across all three phases in networks up to 480 V.

What it is and where it shines

With a fixed 1.6 A current rating and a 3-pole configuration, this device provides balanced protection across all three phases. It’s an ideal choice for control panels, automation cabinets, and small-scale three-phase distributions where sensitive equipment—and the surrounding circuitry—need dependable overcurrent protection without nuisance tripping on the higher‑capacity loads.

Key specifications

• Current rating: 1.6 A
• Poles: 3
• Voltage rating: 480 V
• Part number: S203-K1.6

Why choose this ABB breaker

Choosing the S203-K1.6 means leveraging ABB’s reliable protection philosophy for small‑load, three‑phase circuits. Its 3‑pole design ensures consistent protection across all lines, helping maintain operational safety and surge resistance in industrial and commercial environments where 480 V systems are common. The result is clearer fault delineation, improved system stability, and a robust line of defense for sensitive instrumentation and control gear.

Ideal use cases

• Three-phase control panels and automation cabinets in manufacturing or processing facilities
• Small‑load three‑phase distributions serving sensors, actuators, and instrumentation
• Upstream protection in industrial power layouts where precise current thresholds are crucial

Practical considerations and setup tips

Ensure the system voltage and current requirements align with the S203-K1.6 specifications before installation. Use within standard electrical safety practices and follow applicable codes and datasheets for proper mounting, wiring, and protection coordination. Regular inspection of labeling and terminal connections helps maintain reliable performance over time.