ABB S271-K10A 10A 1-Pole 480 V Circuit Breaker

ABB S271-K10A 10A 1-Pole 480 V Circuit Breaker — a compact, reliable overcurrent protection device built for 480-volt electrical systems. With a straightforward 1-pole design and a 10-amp rating, this breaker is ideal for safeguarding single-phase circuits in commercial and light industrial equipment.

Designed to perform where precise protection matters, the S271-K10A pairs ABB's engineering accuracy with easy installation and dependable operation. Its 480 V rating ensures compatibility with higher-voltage panelboards, while its single-pole format simplifies integration into existing circuits without unnecessary bulk.

Key specifications

• Current rating: 10 A
• Poles: 1
• Voltage rating: 480 V
• Part number: S271-K10A
• Brand: ABB

Why this matters

In busy electrical environments, protection must be both reliable and quick to reset. The ABB S271-K10A delivers consistent trip performance to prevent wiring damage, reduce the risk of electrical fires, and minimize downtime from overcurrent events. By choosing a genuine ABB part, you align with a trusted standard in electrical distribution and panel assemblies.

Ideal use cases

• Single-phase circuits fed from 480-volt panelboards in commercial or light industrial facilities.
• Replacement for aging or failed breakers within ABB-compatible panels that accept S271-series devices.
• Protecting branch circuits powering motors, control panels, or important equipment connected to 480 V systems.

Implementation tips

When installing the S271-K10A, verify the panel compatibility and ensure correct device replacement procedure. Keep spare ABB breakers on hand as part of standard maintenance to minimize equipment downtime. Regularly inspect for signs of wear or overheating and replace a breaker if trip characteristics become inconsistent with historical behavior.

Who benefits most

Electrical contractors, facilities engineers, and maintenance teams responsible for 480 V distributions will appreciate the direct part compatibility, dependable performance, and clear ABB lineage of the S271-K10A. It’s a pragmatic choice for reliable, straightforward protection in 480 V systems.