ABB S201-K4A 4A 1-Pole Circuit Breaker

Introducing the ABB S201-K4A 4A 1-Pole Circuit Breaker — a compact, dependable overcurrent protector designed for simple, single-circuit protection. With a 4-amp rating and a single pole, this device provides focused protection where you need it most without adding unnecessary bulk to your panel.

Key details at a glance

• Part Number: S201-K4A
• Current Rating: 4 A
• Pole Count: 1

Why this 1-Pole choice stands out

In setups where only a single conductor or branch needs protection, a 1-pole breaker keeps the electrical panel tidy and simplifies replacement. The 4 A rating is ideal for low-load circuits such as lighting runs, control circuits, or small appliance feeders where precise overcurrent protection matters. Choosing the ABB S201-K4A means you’re getting a trusted brand known for consistent performance and durable construction, built to handle routine trips and resets with reliability.

Use cases and scenarios

• Residential lighting circuits where a dedicated branch needs protection without switching other circuits.
• Small control circuits in automation or hobbyist projects that require clean, reliable interruption on fault.
• Replacement in legacy installations that already use S201-K4A parts for seamless compatibility.

Practical benefits and considerations

• Space-efficient: single-pole design minimizes panel footprint for tight installations.
• Clear protection: provides immediate disconnection on overcurrent events to prevent wiring overheating.
• Reliable replacement: use the exact part number S201-K4A to ensure proper fit and electrical characteristics.
• Code and safety focus: ensures compliance with local electrical codes by providing a defined cutoff point for the protected circuit.

Tips for optimal results

• Match the breaker to your panel’s intended current and trip characteristics; this device is designed for 4 A load protection on a single-pole circuit.
• Verify the line and load connections follow the manufacturer’s installation instructions for safe operation and predictable trips.
• Keep a documented replacement plan using the exact part number (S201-K4A) to maintain consistent protection across your system.