ABB S202U-K4 4A 2-Pole 240 V Circuit Breaker Potential Transformer

Meet the ABB S202U-K4 4A 2-Pole 240 V Circuit Breaker — a compact, reliable protection device designed for 240V electrical systems. This ABB part (Part Number: S202U-K4) delivers a precise 4 A current rating across two poles, ensuring that both hot lines are simultaneously disconnected when an overload or fault occurs. Built for dependable performance in modern panels, it helps safeguard wiring, devices, and downstream equipment from damage.

• Current rating: 4 A
• Poles: 2 (two-pole configuration)
• Voltage rating: 240 V
• Part Number: S202U-K4
• Brand: ABB
• Function: Circuit protection for AC distribution circuits, providing overcurrent and short-circuit interruption

Why this matters: in any 240V installation, two-pole protection ensures both conductors are safely isolated during a fault, reducing the risk of fire, equipment damage, and electric shock. The 4 A rating is ideal for protecting smaller or dedicated circuits where continuous loads are low, while still offering quick, predictable tripping behavior when surges or faults occur.

Ideal use scenarios

Suitable for 240V electrical panels in residential, commercial, or light industrial settings where a two-pole protection device is required. Use ABB S202U-K4 for small-draw circuits, control circuits, or equipment that operates on 240V and benefits from robust, manually resettable protection in a compact form factor.

Installation and compatibility tips

Ensure the breaker is compatible with your panel and wiring configuration before installation. As with any protective device, verify current and voltage ratings match your application requirements, and follow local electrical codes. For best results, have a qualified electrician perform the installation and confirm proper secure mounting and terminal torque per your panel specifications.

What makes it stand out

Choosing the ABB S202U-K4 means selecting a genuine ABB circuit protection device known for consistency in performance and seamless integration with ABB protection families. It provides reliable two-pole 240V protection in a compact footprint, making it a thoughtful choice for panel layouts where space and dependable protection matter.