ABB S201U-K8 8A 1-Pole 240 V Circuit Breaker

Meet the ABB S201U-K8 8A 1-Pole 240 V Circuit Breaker — a precise, compact protection device designed for reliable overcurrent protection in 240-volt circuits. This ABB circuit breaker carries the part number S201U-K8 and provides an 8-amp current rating across a single pole, making it ideal for safeguarding select loads in compatible panelboards.

Key specifications

• Current rating: 8 A
• Poles: 1
• Voltage rating: 240 V
• Part number: S201U-K8
• Brand: ABB

What makes it unique

Unlike generic substitutes, the S201U-K8 is a dedicated ABB component engineered for a precise fit and predictable performance within ABB-compatible equipment. The 1-pole design is optimized for single-phase 240-volt circuits, delivering controlled interruption when overload occurs, and maintaining compatibility with existing busbar configurations in panels that accept this series.

Ideal use cases

Use the ABB S201U-K8 to protect dedicated branch circuits that operate at 240 V and require up to 8 A. This is a practical choice for small appliance circuits, lighting or receptacle runs in 240 V environments, or control circuits within industrial or commercial equipment where space and compatibility matter.

Why choose ABB S201U-K8 over alternatives

• Exact part compatibility: designed as a direct fit for panel systems that accept the S201U-K8 family, reducing the risk of fitment problems and downtime.
• Clear current limitation: the 8 A rating provides clear, predictable protection for low-to-moderate-load circuits, helping prevent nuisance trips on everyday equipment.
• Single-pole simplicity: streamlined protection for a single hot leg in 240 V configurations, keeping installations straightforward and easy to troubleshoot.

Installation and compatibility tips

Before replacing or adding this breaker, confirm that your panelboard accepts S201U-K8 devices and that the circuit load aligns with the 8 A rating. When installing, follow your panel manufacturer's guidelines for line/load orientation and torque specifications on the terminal connections. If you're unsure about compatibility, consult the panel's documentation or a qualified electrician.