ABB S201-K3A 3A 1-Pole 400 V Circuit Breaker

ABB S201-K3A 3A 1-Pole 400 V Circuit Breaker is a precise, dependable protective device designed to guard small circuits within 400 V electrical networks. With a 3 A nominal current rating, this single-pole breaker quickly interrupts current to prevent overloads and short circuits, helping protect wiring and connected devices without unnecessary trips.

• Current rating: 3 A — trips at overload to safeguard conductors and loads.
• Poles: 1 — single-pole configuration for dedicated circuit protection.
• Voltage rating: 400 V — suitable for 400 V distribution environments and multi-phase systems.
• Part number: S201-K3A — traceable ABB specification for accurate replacement and inventory.
• Brand reliability: ABB engineering delivers consistent trip characteristics and robust construction for long-term protection.

Ideal use cases include protecting lighting circuits, control circuits, and small loads within commercial or light industrial panel boards that operate on 400 V infrastructure. The 1-pole design keeps panel space efficient while delivering dependable overcurrent protection for a single conductor path.

What makes the S201-K3A stand out is its targeted 3 A protection on a 400 V system, paired with ABB’s reputation for durable, predictable performance. This model is a practical, cost-effective choice when you need reliable, low-amperage protection without sacrificing safety or ease of integration into existing ABB-equipped panels.

• Practical tips: Confirm your circuit requires up to 3 A protection and that your system voltage supports a 400 V rating. Ensure installation in compatible panels and follow local electrical codes. Regularly check for signs of nuisance tripping or wear, and replace when needed to maintain consistent protection.
• Best for: electricians and maintenance teams outfitting 400 V electrical installations that demand precise, single-pole protection for small-load circuits.

For dependable, focused overcurrent protection on 400 V networks, the ABB S201-K3A 3A 1-Pole 400 V Circuit Breaker delivers clarity, reliability, and protection you can trust.